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Finding the Fourth Proportional to 177,403.80, 266,105.70 and 137,746.20

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Solution

The fourth proportional to 177,403.80, 266,105.70 and 137,746.20 is: 206,619.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,403.80 : 266,105.70 = 137,746.20 : x
  2. Step 2: Convert to fraction form
    177,403.80/266,105.70 = 137,746.20/x
  3. Step 3: Cross multiply
    177,403.80x = 266,105.70 × 137,746.20
  4. Step 4: Simplify right side
    177,403.80x = 36,655,048,973.34
  5. Step 5: Solve for x
    x = 36,655,048,973.34/177,403.80
  6. Step 6: Final answer
    x = 206,619.30

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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.