Home / 111,117.26-153,340.64-60,128.87

Finding the Fourth Proportional to 111,117.26, 153,340.64 and 60,128.87

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Solution

The fourth proportional to 111,117.26, 153,340.64 and 60,128.87 is: 82,977.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,117.26 : 153,340.64 = 60,128.87 : x
  2. Step 2: Convert to fraction form
    111,117.26/153,340.64 = 60,128.87/x
  3. Step 3: Cross multiply
    111,117.26x = 153,340.64 × 60,128.87
  4. Step 4: Simplify right side
    111,117.26x = 9,220,198,340.93
  5. Step 5: Solve for x
    x = 9,220,198,340.93/111,117.26
  6. Step 6: Final answer
    x = 82,977.20

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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.