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Finding the Fourth Proportional to 155,955.70, 233,587.95 and 120,781.30

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Solution

The fourth proportional to 155,955.70, 233,587.95 and 120,781.30 is: 180,904.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,955.70 : 233,587.95 = 120,781.30 : x
  2. Step 2: Convert to fraction form
    155,955.70/233,587.95 = 120,781.30/x
  3. Step 3: Cross multiply
    155,955.70x = 233,587.95 × 120,781.30
  4. Step 4: Simplify right side
    155,955.70x = 28,213,056,265.34
  5. Step 5: Solve for x
    x = 28,213,056,265.34/155,955.70
  6. Step 6: Final answer
    x = 180,904.30

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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.