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Finding the Fourth Proportional to 178,034.80, 266,706.60 and 99,007.60

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Solution

The fourth proportional to 178,034.80, 266,706.60 and 99,007.60 is: 148,319.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,034.80 : 266,706.60 = 99,007.60 : x
  2. Step 2: Convert to fraction form
    178,034.80/266,706.60 = 99,007.60/x
  3. Step 3: Cross multiply
    178,034.80x = 266,706.60 × 99,007.60
  4. Step 4: Simplify right side
    178,034.80x = 26,405,980,370.16
  5. Step 5: Solve for x
    x = 26,405,980,370.16/178,034.80
  6. Step 6: Final answer
    x = 148,319.21

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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.