Home / 111,395.18-153,711.54-71,132.51

Finding the Fourth Proportional to 111,395.18, 153,711.54 and 71,132.51

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Solution

The fourth proportional to 111,395.18, 153,711.54 and 71,132.51 is: 98,154.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,395.18 : 153,711.54 = 71,132.51 : x
  2. Step 2: Convert to fraction form
    111,395.18/153,711.54 = 71,132.51/x
  3. Step 3: Cross multiply
    111,395.18x = 153,711.54 × 71,132.51
  4. Step 4: Simplify right side
    111,395.18x = 10,933,888,040.44
  5. Step 5: Solve for x
    x = 10,933,888,040.44/111,395.18
  6. Step 6: Final answer
    x = 98,154.05

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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.