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Finding the Fourth Proportional to 158,711.00, 219,021.06 and 90,729.47

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Solution

The fourth proportional to 158,711.00, 219,021.06 and 90,729.47 is: 125,206.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,711.00 : 219,021.06 = 90,729.47 : x
  2. Step 2: Convert to fraction form
    158,711.00/219,021.06 = 90,729.47/x
  3. Step 3: Cross multiply
    158,711.00x = 219,021.06 × 90,729.47
  4. Step 4: Simplify right side
    158,711.00x = 19,871,663,582.90
  5. Step 5: Solve for x
    x = 19,871,663,582.90/158,711.00
  6. Step 6: Final answer
    x = 125,206.60

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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.