Home / 129,223.61-193,708.86-72,325.30

Finding the Fourth Proportional to 129,223.61, 193,708.86 and 72,325.30

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Solution

The fourth proportional to 129,223.61, 193,708.86 and 72,325.30 is: 108,417.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,223.61 : 193,708.86 = 72,325.30 : x
  2. Step 2: Convert to fraction form
    129,223.61/193,708.86 = 72,325.30/x
  3. Step 3: Cross multiply
    129,223.61x = 193,708.86 × 72,325.30
  4. Step 4: Simplify right side
    129,223.61x = 14,010,051,412.16
  5. Step 5: Solve for x
    x = 14,010,051,412.16/129,223.61
  6. Step 6: Final answer
    x = 108,417.12

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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.