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Finding the Fourth Proportional to 155,613.60, 214,738.02 and 91,957.32

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Solution

The fourth proportional to 155,613.60, 214,738.02 and 91,957.32 is: 126,895.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,613.60 : 214,738.02 = 91,957.32 : x
  2. Step 2: Convert to fraction form
    155,613.60/214,738.02 = 91,957.32/x
  3. Step 3: Cross multiply
    155,613.60x = 214,738.02 × 91,957.32
  4. Step 4: Simplify right side
    155,613.60x = 19,746,732,821.31
  5. Step 5: Solve for x
    x = 19,746,732,821.31/155,613.60
  6. Step 6: Final answer
    x = 126,895.93

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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.