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Finding the Fourth Proportional to 115,339.13, 172,947.03 and 59,156.31

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Solution

The fourth proportional to 115,339.13, 172,947.03 and 59,156.31 is: 88,702.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,339.13 : 172,947.03 = 59,156.31 : x
  2. Step 2: Convert to fraction form
    115,339.13/172,947.03 = 59,156.31/x
  3. Step 3: Cross multiply
    115,339.13x = 172,947.03 × 59,156.31
  4. Step 4: Simplify right side
    115,339.13x = 10,230,908,120.26
  5. Step 5: Solve for x
    x = 10,230,908,120.26/115,339.13
  6. Step 6: Final answer
    x = 88,702.84

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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.