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Finding the Fourth Proportional to 94,751.60, 142,127.40 and 79,314.80

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Solution

The fourth proportional to 94,751.60, 142,127.40 and 79,314.80 is: 118,972.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,751.60 : 142,127.40 = 79,314.80 : x
  2. Step 2: Convert to fraction form
    94,751.60/142,127.40 = 79,314.80/x
  3. Step 3: Cross multiply
    94,751.60x = 142,127.40 × 79,314.80
  4. Step 4: Simplify right side
    94,751.60x = 11,272,806,305.52
  5. Step 5: Solve for x
    x = 11,272,806,305.52/94,751.60
  6. Step 6: Final answer
    x = 118,972.20

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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.