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Finding the Fourth Proportional to 178,186.80, 266,934.60 and 99,159.60

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Solution

The fourth proportional to 178,186.80, 266,934.60 and 99,159.60 is: 148,547.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,186.80 : 266,934.60 = 99,159.60 : x
  2. Step 2: Convert to fraction form
    178,186.80/266,934.60 = 99,159.60/x
  3. Step 3: Cross multiply
    178,186.80x = 266,934.60 × 99,159.60
  4. Step 4: Simplify right side
    178,186.80x = 26,469,128,162.16
  5. Step 5: Solve for x
    x = 26,469,128,162.16/178,186.80
  6. Step 6: Final answer
    x = 148,547.08

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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.