Home / 129,777,043,265.34-179,035,270,699.59-78,306,894,069.18

Finding the Fourth Proportional to 129,777,043,265.34, 179,035,270,699.59 and 78,306,894,069.18

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Solution

The fourth proportional to 129,777,043,265.34, 179,035,270,699.59 and 78,306,894,069.18 is: 108,029,090,697.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,777,043,265.34 : 179,035,270,699.59 = 78,306,894,069.18 : x
  2. Step 2: Convert to fraction form
    129,777,043,265.34/179,035,270,699.59 = 78,306,894,069.18/x
  3. Step 3: Cross multiply
    129,777,043,265.34x = 179,035,270,699.59 × 78,306,894,069.18
  4. Step 4: Simplify right side
    129,777,043,265.34x = 14,019,695,977,319,758,823,424
  5. Step 5: Solve for x
    x = 14,019,695,977,319,758,823,424/129,777,043,265.34
  6. Step 6: Final answer
    x = 108,029,090,697.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.