Home / 158,931.29-219,263.01-90,911.95

Finding the Fourth Proportional to 158,931.29, 219,263.01 and 90,911.95

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Solution

The fourth proportional to 158,931.29, 219,263.01 and 90,911.95 is: 125,422.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,931.29 : 219,263.01 = 90,911.95 : x
  2. Step 2: Convert to fraction form
    158,931.29/219,263.01 = 90,911.95/x
  3. Step 3: Cross multiply
    158,931.29x = 219,263.01 × 90,911.95
  4. Step 4: Simplify right side
    158,931.29x = 19,933,627,801.97
  5. Step 5: Solve for x
    x = 19,933,627,801.97/158,931.29
  6. Step 6: Final answer
    x = 125,422.93

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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.