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Finding the Fourth Proportional to 178,129.16, 266,769.70 and 103,091.16

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Solution

The fourth proportional to 178,129.16, 266,769.70 and 103,091.16 is: 154,391.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,129.16 : 266,769.70 = 103,091.16 : x
  2. Step 2: Convert to fraction form
    178,129.16/266,769.70 = 103,091.16/x
  3. Step 3: Cross multiply
    178,129.16x = 266,769.70 × 103,091.16
  4. Step 4: Simplify right side
    178,129.16x = 27,501,599,148.40
  5. Step 5: Solve for x
    x = 27,501,599,148.40/178,129.16
  6. Step 6: Final answer
    x = 154,391.34

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1.5x scale

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.