Home / 158,279.90-218,447.05-90,281.26

Finding the Fourth Proportional to 158,279.90, 218,447.05 and 90,281.26

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Solution

The fourth proportional to 158,279.90, 218,447.05 and 90,281.26 is: 124,599.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,279.90 : 218,447.05 = 90,281.26 : x
  2. Step 2: Convert to fraction form
    158,279.90/218,447.05 = 90,281.26/x
  3. Step 3: Cross multiply
    158,279.90x = 218,447.05 × 90,281.26
  4. Step 4: Simplify right side
    158,279.90x = 19,721,673,825.05
  5. Step 5: Solve for x
    x = 19,721,673,825.05/158,279.90
  6. Step 6: Final answer
    x = 124,599.99

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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.