Home / 120,242.17-180,058.14-72,180.87

Finding the Fourth Proportional to 120,242.17, 180,058.14 and 72,180.87

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Solution

The fourth proportional to 120,242.17, 180,058.14 and 72,180.87 is: 108,088.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,242.17 : 180,058.14 = 72,180.87 : x
  2. Step 2: Convert to fraction form
    120,242.17/180,058.14 = 72,180.87/x
  3. Step 3: Cross multiply
    120,242.17x = 180,058.14 × 72,180.87
  4. Step 4: Simplify right side
    120,242.17x = 12,996,753,533.39
  5. Step 5: Solve for x
    x = 12,996,753,533.39/120,242.17
  6. Step 6: Final answer
    x = 108,088.15

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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.