Home / 142,109.52-211,999.32-138,248.28

Finding the Fourth Proportional to 142,109.52, 211,999.32 and 138,248.28

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Solution

The fourth proportional to 142,109.52, 211,999.32 and 138,248.28 is: 206,239.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,109.52 : 211,999.32 = 138,248.28 : x
  2. Step 2: Convert to fraction form
    142,109.52/211,999.32 = 138,248.28/x
  3. Step 3: Cross multiply
    142,109.52x = 211,999.32 × 138,248.28
  4. Step 4: Simplify right side
    142,109.52x = 29,308,541,351.17
  5. Step 5: Solve for x
    x = 29,308,541,351.17/142,109.52
  6. Step 6: Final answer
    x = 206,239.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.