Home / 138,150.12-190,386.59-121,042.92

Finding the Fourth Proportional to 138,150.12, 190,386.59 and 121,042.92

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Solution

The fourth proportional to 138,150.12, 190,386.59 and 121,042.92 is: 166,810.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,150.12 : 190,386.59 = 121,042.92 : x
  2. Step 2: Convert to fraction form
    138,150.12/190,386.59 = 121,042.92/x
  3. Step 3: Cross multiply
    138,150.12x = 190,386.59 × 121,042.92
  4. Step 4: Simplify right side
    138,150.12x = 23,044,948,177.23
  5. Step 5: Solve for x
    x = 23,044,948,177.23/138,150.12
  6. Step 6: Final answer
    x = 166,810.92

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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.