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Finding the Fourth Proportional to 117,938.60, 176,950.56 and 72,907.28

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Solution

The fourth proportional to 117,938.60, 176,950.56 and 72,907.28 is: 109,387.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,938.60 : 176,950.56 = 72,907.28 : x
  2. Step 2: Convert to fraction form
    117,938.60/176,950.56 = 72,907.28/x
  3. Step 3: Cross multiply
    117,938.60x = 176,950.56 × 72,907.28
  4. Step 4: Simplify right side
    117,938.60x = 12,900,984,024.08
  5. Step 5: Solve for x
    x = 12,900,984,024.08/117,938.60
  6. Step 6: Final answer
    x = 109,387.29

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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.