Home / 120,384,842.80-180,577,264.20-86,624,561.20

Finding the Fourth Proportional to 120,384,842.80, 180,577,264.20 and 86,624,561.20

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Solution

The fourth proportional to 120,384,842.80, 180,577,264.20 and 86,624,561.20 is: 129,936,841.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,384,842.80 : 180,577,264.20 = 86,624,561.20 : x
  2. Step 2: Convert to fraction form
    120,384,842.80/180,577,264.20 = 86,624,561.20/x
  3. Step 3: Cross multiply
    120,384,842.80x = 180,577,264.20 × 86,624,561.20
  4. Step 4: Simplify right side
    120,384,842.80x = 15,642,426,274,021,468
  5. Step 5: Solve for x
    x = 15,642,426,274,021,468/120,384,842.80
  6. Step 6: Final answer
    x = 129,936,841.80

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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.