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Finding the Fourth Proportional to 140,411.68, 209,530.88 and 125,458.08

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Solution

The fourth proportional to 140,411.68, 209,530.88 and 125,458.08 is: 187,216.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,411.68 : 209,530.88 = 125,458.08 : x
  2. Step 2: Convert to fraction form
    140,411.68/209,530.88 = 125,458.08/x
  3. Step 3: Cross multiply
    140,411.68x = 209,530.88 × 125,458.08
  4. Step 4: Simplify right side
    140,411.68x = 26,287,341,905.51
  5. Step 5: Solve for x
    x = 26,287,341,905.51/140,411.68
  6. Step 6: Final answer
    x = 187,216.21

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.