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Finding the Fourth Proportional to 117,148.54, 175,538.76 and 90,559.66

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Solution

The fourth proportional to 117,148.54, 175,538.76 and 90,559.66 is: 135,697.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,148.54 : 175,538.76 = 90,559.66 : x
  2. Step 2: Convert to fraction form
    117,148.54/175,538.76 = 90,559.66/x
  3. Step 3: Cross multiply
    117,148.54x = 175,538.76 × 90,559.66
  4. Step 4: Simplify right side
    117,148.54x = 15,896,730,422.42
  5. Step 5: Solve for x
    x = 15,896,730,422.42/117,148.54
  6. Step 6: Final answer
    x = 135,697.21

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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.