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Finding the Fourth Proportional to 115,006.60, 172,515.30 and 36,123.40

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Solution

The fourth proportional to 115,006.60, 172,515.30 and 36,123.40 is: 54,186.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,006.60 : 172,515.30 = 36,123.40 : x
  2. Step 2: Convert to fraction form
    115,006.60/172,515.30 = 36,123.40/x
  3. Step 3: Cross multiply
    115,006.60x = 172,515.30 × 36,123.40
  4. Step 4: Simplify right side
    115,006.60x = 6,231,839,188.02
  5. Step 5: Solve for x
    x = 6,231,839,188.02/115,006.60
  6. Step 6: Final answer
    x = 54,186.80

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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.