Home / 105,432.30-158,148.45-100,881.90

Finding the Fourth Proportional to 105,432.30, 158,148.45 and 100,881.90

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Solution

The fourth proportional to 105,432.30, 158,148.45 and 100,881.90 is: 151,322.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,432.30 : 158,148.45 = 100,881.90 : x
  2. Step 2: Convert to fraction form
    105,432.30/158,148.45 = 100,881.90/x
  3. Step 3: Cross multiply
    105,432.30x = 158,148.45 × 100,881.90
  4. Step 4: Simplify right side
    105,432.30x = 15,954,316,118.06
  5. Step 5: Solve for x
    x = 15,954,316,118.06/105,432.30
  6. Step 6: Final answer
    x = 151,322.85

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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.