Home / 90,701.10-136,051.65-74,079.90

Finding the Fourth Proportional to 90,701.10, 136,051.65 and 74,079.90

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Solution

The fourth proportional to 90,701.10, 136,051.65 and 74,079.90 is: 111,119.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,701.10 : 136,051.65 = 74,079.90 : x
  2. Step 2: Convert to fraction form
    90,701.10/136,051.65 = 74,079.90/x
  3. Step 3: Cross multiply
    90,701.10x = 136,051.65 × 74,079.90
  4. Step 4: Simplify right side
    90,701.10x = 10,078,692,626.84
  5. Step 5: Solve for x
    x = 10,078,692,626.84/90,701.10
  6. Step 6: Final answer
    x = 111,119.85

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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.