Home / 111,426.49-153,781.23-77,425.93

Finding the Fourth Proportional to 111,426.49, 153,781.23 and 77,425.93

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Solution

The fourth proportional to 111,426.49, 153,781.23 and 77,425.93 is: 106,856.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,426.49 : 153,781.23 = 77,425.93 : x
  2. Step 2: Convert to fraction form
    111,426.49/153,781.23 = 77,425.93/x
  3. Step 3: Cross multiply
    111,426.49x = 153,781.23 × 77,425.93
  4. Step 4: Simplify right side
    111,426.49x = 11,906,654,749.29
  5. Step 5: Solve for x
    x = 11,906,654,749.29/111,426.49
  6. Step 6: Final answer
    x = 106,856.59

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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.