Home / 111,117.36-153,340.78-60,128.97

Finding the Fourth Proportional to 111,117.36, 153,340.78 and 60,128.97

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Solution

The fourth proportional to 111,117.36, 153,340.78 and 60,128.97 is: 82,977.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,117.36 : 153,340.78 = 60,128.97 : x
  2. Step 2: Convert to fraction form
    111,117.36/153,340.78 = 60,128.97/x
  3. Step 3: Cross multiply
    111,117.36x = 153,340.78 × 60,128.97
  4. Step 4: Simplify right side
    111,117.36x = 9,220,223,160.40
  5. Step 5: Solve for x
    x = 9,220,223,160.40/111,117.36
  6. Step 6: Final answer
    x = 82,977.34

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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.