Home / 91,187.79-125,841.28-57,197.71

Finding the Fourth Proportional to 91,187.79, 125,841.28 and 57,197.71

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Solution

The fourth proportional to 91,187.79, 125,841.28 and 57,197.71 is: 78,934.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,187.79 : 125,841.28 = 57,197.71 : x
  2. Step 2: Convert to fraction form
    91,187.79/125,841.28 = 57,197.71/x
  3. Step 3: Cross multiply
    91,187.79x = 125,841.28 × 57,197.71
  4. Step 4: Simplify right side
    91,187.79x = 7,197,833,161.02
  5. Step 5: Solve for x
    x = 7,197,833,161.02/91,187.79
  6. Step 6: Final answer
    x = 78,934.18

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1.5x scale

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.