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Finding the Fourth Proportional to 188,387.80, 260,043.51 and 124,746.10

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Solution

The fourth proportional to 188,387.80, 260,043.51 and 124,746.10 is: 172,194.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,387.80 : 260,043.51 = 124,746.10 : x
  2. Step 2: Convert to fraction form
    188,387.80/260,043.51 = 124,746.10/x
  3. Step 3: Cross multiply
    188,387.80x = 260,043.51 × 124,746.10
  4. Step 4: Simplify right side
    188,387.80x = 32,439,413,702.81
  5. Step 5: Solve for x
    x = 32,439,413,702.81/188,387.80
  6. Step 6: Final answer
    x = 172,194.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.