Home / 91,146.16-125,790.78-55,333.36

Finding the Fourth Proportional to 91,146.16, 125,790.78 and 55,333.36

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Solution

The fourth proportional to 91,146.16, 125,790.78 and 55,333.36 is: 76,365.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,146.16 : 125,790.78 = 55,333.36 : x
  2. Step 2: Convert to fraction form
    91,146.16/125,790.78 = 55,333.36/x
  3. Step 3: Cross multiply
    91,146.16x = 125,790.78 × 55,333.36
  4. Step 4: Simplify right side
    91,146.16x = 6,960,426,514.42
  5. Step 5: Solve for x
    x = 6,960,426,514.42/91,146.16
  6. Step 6: Final answer
    x = 76,365.55

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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.