Home / 101,981.16-152,948.64-38,778.75

Finding the Fourth Proportional to 101,981.16, 152,948.64 and 38,778.75

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Solution

The fourth proportional to 101,981.16, 152,948.64 and 38,778.75 is: 58,159.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,981.16 : 152,948.64 = 38,778.75 : x
  2. Step 2: Convert to fraction form
    101,981.16/152,948.64 = 38,778.75/x
  3. Step 3: Cross multiply
    101,981.16x = 152,948.64 × 38,778.75
  4. Step 4: Simplify right side
    101,981.16x = 5,931,157,073.40
  5. Step 5: Solve for x
    x = 5,931,157,073.40/101,981.16
  6. Step 6: Final answer
    x = 58,159.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.