Home / 134,841.30-202,318.65-72,438.90

Finding the Fourth Proportional to 134,841.30, 202,318.65 and 72,438.90

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Solution

The fourth proportional to 134,841.30, 202,318.65 and 72,438.90 is: 108,688.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,841.30 : 202,318.65 = 72,438.90 : x
  2. Step 2: Convert to fraction form
    134,841.30/202,318.65 = 72,438.90/x
  3. Step 3: Cross multiply
    134,841.30x = 202,318.65 × 72,438.90
  4. Step 4: Simplify right side
    134,841.30x = 14,655,740,455.49
  5. Step 5: Solve for x
    x = 14,655,740,455.49/134,841.30
  6. Step 6: Final answer
    x = 108,688.81

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1.5x scale

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.