Home / 84,441.60-126,508.80-68,774.40

Finding the Fourth Proportional to 84,441.60, 126,508.80 and 68,774.40

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Solution

The fourth proportional to 84,441.60, 126,508.80 and 68,774.40 is: 103,036.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,441.60 : 126,508.80 = 68,774.40 : x
  2. Step 2: Convert to fraction form
    84,441.60/126,508.80 = 68,774.40/x
  3. Step 3: Cross multiply
    84,441.60x = 126,508.80 × 68,774.40
  4. Step 4: Simplify right side
    84,441.60x = 8,700,566,814.72
  5. Step 5: Solve for x
    x = 8,700,566,814.72/84,441.60
  6. Step 6: Final answer
    x = 103,036.50

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1.5x scale

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.