Home / 138,569.03-191,097.74-90,805.03

Finding the Fourth Proportional to 138,569.03, 191,097.74 and 90,805.03

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Solution

The fourth proportional to 138,569.03, 191,097.74 and 90,805.03 is: 125,227.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,569.03 : 191,097.74 = 90,805.03 : x
  2. Step 2: Convert to fraction form
    138,569.03/191,097.74 = 90,805.03/x
  3. Step 3: Cross multiply
    138,569.03x = 191,097.74 × 90,805.03
  4. Step 4: Simplify right side
    138,569.03x = 17,352,635,559.61
  5. Step 5: Solve for x
    x = 17,352,635,559.61/138,569.03
  6. Step 6: Final answer
    x = 125,227.37

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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.