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Finding the Fourth Proportional to 161,402.80, 241,931.40 and 72,641.20

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Solution

The fourth proportional to 161,402.80, 241,931.40 and 72,641.20 is: 108,884.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,402.80 : 241,931.40 = 72,641.20 : x
  2. Step 2: Convert to fraction form
    161,402.80/241,931.40 = 72,641.20/x
  3. Step 3: Cross multiply
    161,402.80x = 241,931.40 × 72,641.20
  4. Step 4: Simplify right side
    161,402.80x = 17,574,187,213.68
  5. Step 5: Solve for x
    x = 17,574,187,213.68/161,402.80
  6. Step 6: Final answer
    x = 108,884.03

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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.