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Finding the Fourth Proportional to 151,700.52, 209,108.34 and 103,871.16

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Solution

The fourth proportional to 151,700.52, 209,108.34 and 103,871.16 is: 143,178.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,700.52 : 209,108.34 = 103,871.16 : x
  2. Step 2: Convert to fraction form
    151,700.52/209,108.34 = 103,871.16/x
  3. Step 3: Cross multiply
    151,700.52x = 209,108.34 × 103,871.16
  4. Step 4: Simplify right side
    151,700.52x = 21,720,325,841.47
  5. Step 5: Solve for x
    x = 21,720,325,841.47/151,700.52
  6. Step 6: Final answer
    x = 143,178.98

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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.