Home / 97,711.12-134,967.90-72,269.20

Finding the Fourth Proportional to 97,711.12, 134,967.90 and 72,269.20

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Solution

The fourth proportional to 97,711.12, 134,967.90 and 72,269.20 is: 99,825.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,711.12 : 134,967.90 = 72,269.20 : x
  2. Step 2: Convert to fraction form
    97,711.12/134,967.90 = 72,269.20/x
  3. Step 3: Cross multiply
    97,711.12x = 134,967.90 × 72,269.20
  4. Step 4: Simplify right side
    97,711.12x = 9,754,022,158.68
  5. Step 5: Solve for x
    x = 9,754,022,158.68/97,711.12
  6. Step 6: Final answer
    x = 99,825.10

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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.