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Finding the Fourth Proportional to 177,312.80, 266,066.40 and 72,207.20

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Solution

The fourth proportional to 177,312.80, 266,066.40 and 72,207.20 is: 108,350.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,312.80 : 266,066.40 = 72,207.20 : x
  2. Step 2: Convert to fraction form
    177,312.80/266,066.40 = 72,207.20/x
  3. Step 3: Cross multiply
    177,312.80x = 266,066.40 × 72,207.20
  4. Step 4: Simplify right side
    177,312.80x = 19,211,909,758.08
  5. Step 5: Solve for x
    x = 19,211,909,758.08/177,312.80
  6. Step 6: Final answer
    x = 108,350.38

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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.