Home / 120,213,265.20-180,319,897.80-81,949,513.20

Finding the Fourth Proportional to 120,213,265.20, 180,319,897.80 and 81,949,513.20

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Solution

The fourth proportional to 120,213,265.20, 180,319,897.80 and 81,949,513.20 is: 122,924,269.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,213,265.20 : 180,319,897.80 = 81,949,513.20 : x
  2. Step 2: Convert to fraction form
    120,213,265.20/180,319,897.80 = 81,949,513.20/x
  3. Step 3: Cross multiply
    120,213,265.20x = 180,319,897.80 × 81,949,513.20
  4. Step 4: Simplify right side
    120,213,265.20x = 14,777,127,844,983,752
  5. Step 5: Solve for x
    x = 14,777,127,844,983,752/120,213,265.20
  6. Step 6: Final answer
    x = 122,924,269.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.