Home / 158,221.26-218,291.06-90,189.17

Finding the Fourth Proportional to 158,221.26, 218,291.06 and 90,189.17

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Solution

The fourth proportional to 158,221.26, 218,291.06 and 90,189.17 is: 124,430.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,221.26 : 218,291.06 = 90,189.17 : x
  2. Step 2: Convert to fraction form
    158,221.26/218,291.06 = 90,189.17/x
  3. Step 3: Cross multiply
    158,221.26x = 218,291.06 × 90,189.17
  4. Step 4: Simplify right side
    158,221.26x = 19,687,487,977.42
  5. Step 5: Solve for x
    x = 19,687,487,977.42/158,221.26
  6. Step 6: Final answer
    x = 124,430.10

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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.