Home / 129,020.79-193,432.69-72,924.24

Finding the Fourth Proportional to 129,020.79, 193,432.69 and 72,924.24

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Solution

The fourth proportional to 129,020.79, 193,432.69 and 72,924.24 is: 109,330.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,020.79 : 193,432.69 = 72,924.24 : x
  2. Step 2: Convert to fraction form
    129,020.79/193,432.69 = 72,924.24/x
  3. Step 3: Cross multiply
    129,020.79x = 193,432.69 × 72,924.24
  4. Step 4: Simplify right side
    129,020.79x = 14,105,931,909.41
  5. Step 5: Solve for x
    x = 14,105,931,909.41/129,020.79
  6. Step 6: Final answer
    x = 109,330.69

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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.