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Finding the Fourth Proportional to 145,176.71, 218,617.76 and 126,677.42

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Solution

The fourth proportional to 145,176.71, 218,617.76 and 126,677.42 is: 190,760.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,176.71 : 218,617.76 = 126,677.42 : x
  2. Step 2: Convert to fraction form
    145,176.71/218,617.76 = 126,677.42/x
  3. Step 3: Cross multiply
    145,176.71x = 218,617.76 × 126,677.42
  4. Step 4: Simplify right side
    145,176.71x = 27,693,933,490.12
  5. Step 5: Solve for x
    x = 27,693,933,490.12/145,176.71
  6. Step 6: Final answer
    x = 190,760.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.