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Finding the Fourth Proportional to 105,008.40, 157,512.60 and 88,605.90

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Solution

The fourth proportional to 105,008.40, 157,512.60 and 88,605.90 is: 132,908.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,008.40 : 157,512.60 = 88,605.90 : x
  2. Step 2: Convert to fraction form
    105,008.40/157,512.60 = 88,605.90/x
  3. Step 3: Cross multiply
    105,008.40x = 157,512.60 × 88,605.90
  4. Step 4: Simplify right side
    105,008.40x = 13,956,545,684.34
  5. Step 5: Solve for x
    x = 13,956,545,684.34/105,008.40
  6. Step 6: Final answer
    x = 132,908.85

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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.