Home / 129,749,123.78-179,054,265.16-70,210,420.20

Finding the Fourth Proportional to 129,749,123.78, 179,054,265.16 and 70,210,420.20

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Solution

The fourth proportional to 129,749,123.78, 179,054,265.16 and 70,210,420.20 is: 96,890,636.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,749,123.78 : 179,054,265.16 = 70,210,420.20 : x
  2. Step 2: Convert to fraction form
    129,749,123.78/179,054,265.16 = 70,210,420.20/x
  3. Step 3: Cross multiply
    129,749,123.78x = 179,054,265.16 × 70,210,420.20
  4. Step 4: Simplify right side
    129,749,123.78x = 12,571,475,195,485,820
  5. Step 5: Solve for x
    x = 12,571,475,195,485,820/129,749,123.78
  6. Step 6: Final answer
    x = 96,890,636.55

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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.