Home / 158,929.29-219,260.25-90,909.95

Finding the Fourth Proportional to 158,929.29, 219,260.25 and 90,909.95

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Solution

The fourth proportional to 158,929.29, 219,260.25 and 90,909.95 is: 125,420.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,929.29 : 219,260.25 = 90,909.95 : x
  2. Step 2: Convert to fraction form
    158,929.29/219,260.25 = 90,909.95/x
  3. Step 3: Cross multiply
    158,929.29x = 219,260.25 × 90,909.95
  4. Step 4: Simplify right side
    158,929.29x = 19,932,937,268.19
  5. Step 5: Solve for x
    x = 19,932,937,268.19/158,929.29
  6. Step 6: Final answer
    x = 125,420.16

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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.