Home / 155,109.28-232,733.04-81,220

Finding the Fourth Proportional to 155,109.28, 232,733.04 and 81,220

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Solution

The fourth proportional to 155,109.28, 232,733.04 and 81,220 is: 121,866.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,109.28 : 232,733.04 = 81,220 : x
  2. Step 2: Convert to fraction form
    155,109.28/232,733.04 = 81,220/x
  3. Step 3: Cross multiply
    155,109.28x = 232,733.04 × 81,220
  4. Step 4: Simplify right side
    155,109.28x = 18,902,577,508.80
  5. Step 5: Solve for x
    x = 18,902,577,508.80/155,109.28
  6. Step 6: Final answer
    x = 121,866.19

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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.