Home / 158,366.29-218,484.66-90,387.04

Finding the Fourth Proportional to 158,366.29, 218,484.66 and 90,387.04

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Solution

The fourth proportional to 158,366.29, 218,484.66 and 90,387.04 is: 124,699.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,366.29 : 218,484.66 = 90,387.04 : x
  2. Step 2: Convert to fraction form
    158,366.29/218,484.66 = 90,387.04/x
  3. Step 3: Cross multiply
    158,366.29x = 218,484.66 × 90,387.04
  4. Step 4: Simplify right side
    158,366.29x = 19,748,181,702.81
  5. Step 5: Solve for x
    x = 19,748,181,702.81/158,366.29
  6. Step 6: Final answer
    x = 124,699.40

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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.