Home / 115,335.66-159,154.56-75,126.45

Finding the Fourth Proportional to 115,335.66, 159,154.56 and 75,126.45

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Solution

The fourth proportional to 115,335.66, 159,154.56 and 75,126.45 is: 103,668.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,335.66 : 159,154.56 = 75,126.45 : x
  2. Step 2: Convert to fraction form
    115,335.66/159,154.56 = 75,126.45/x
  3. Step 3: Cross multiply
    115,335.66x = 159,154.56 × 75,126.45
  4. Step 4: Simplify right side
    115,335.66x = 11,956,717,094.11
  5. Step 5: Solve for x
    x = 11,956,717,094.11/115,335.66
  6. Step 6: Final answer
    x = 103,668.87

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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.