Home / 80,097.36-120,164.29-42,637.70

Finding the Fourth Proportional to 80,097.36, 120,164.29 and 42,637.70

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Solution

The fourth proportional to 80,097.36, 120,164.29 and 42,637.70 is: 63,966.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,097.36 : 120,164.29 = 42,637.70 : x
  2. Step 2: Convert to fraction form
    80,097.36/120,164.29 = 42,637.70/x
  3. Step 3: Cross multiply
    80,097.36x = 120,164.29 × 42,637.70
  4. Step 4: Simplify right side
    80,097.36x = 5,123,528,705.46
  5. Step 5: Solve for x
    x = 5,123,528,705.46/80,097.36
  6. Step 6: Final answer
    x = 63,966.26

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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.