Home / 103,932.32-155,781.84-51,378.71

Finding the Fourth Proportional to 103,932.32, 155,781.84 and 51,378.71

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Solution

The fourth proportional to 103,932.32, 155,781.84 and 51,378.71 is: 77,010.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,932.32 : 155,781.84 = 51,378.71 : x
  2. Step 2: Convert to fraction form
    103,932.32/155,781.84 = 51,378.71/x
  3. Step 3: Cross multiply
    103,932.32x = 155,781.84 × 51,378.71
  4. Step 4: Simplify right side
    103,932.32x = 8,003,869,980.63
  5. Step 5: Solve for x
    x = 8,003,869,980.63/103,932.32
  6. Step 6: Final answer
    x = 77,010.40

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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.