Home / 126,740.79-174,922.65-72,310.71

Finding the Fourth Proportional to 126,740.79, 174,922.65 and 72,310.71

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Solution

The fourth proportional to 126,740.79, 174,922.65 and 72,310.71 is: 99,800.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,740.79 : 174,922.65 = 72,310.71 : x
  2. Step 2: Convert to fraction form
    126,740.79/174,922.65 = 72,310.71/x
  3. Step 3: Cross multiply
    126,740.79x = 174,922.65 × 72,310.71
  4. Step 4: Simplify right side
    126,740.79x = 12,648,781,287.75
  5. Step 5: Solve for x
    x = 12,648,781,287.75/126,740.79
  6. Step 6: Final answer
    x = 99,800.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.