Home / 129,931.60-194,897.40-103,687.60

Finding the Fourth Proportional to 129,931.60, 194,897.40 and 103,687.60

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Solution

The fourth proportional to 129,931.60, 194,897.40 and 103,687.60 is: 155,531.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,931.60 : 194,897.40 = 103,687.60 : x
  2. Step 2: Convert to fraction form
    129,931.60/194,897.40 = 103,687.60/x
  3. Step 3: Cross multiply
    129,931.60x = 194,897.40 × 103,687.60
  4. Step 4: Simplify right side
    129,931.60x = 20,208,443,652.24
  5. Step 5: Solve for x
    x = 20,208,443,652.24/129,931.60
  6. Step 6: Final answer
    x = 155,531.40

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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.