Home / 88,074.20-121,374.60-86,454.76

Finding the Fourth Proportional to 88,074.20, 121,374.60 and 86,454.76

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Solution

The fourth proportional to 88,074.20, 121,374.60 and 86,454.76 is: 119,142.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,074.20 : 121,374.60 = 86,454.76 : x
  2. Step 2: Convert to fraction form
    88,074.20/121,374.60 = 86,454.76/x
  3. Step 3: Cross multiply
    88,074.20x = 121,374.60 × 86,454.76
  4. Step 4: Simplify right side
    88,074.20x = 10,493,411,999.34
  5. Step 5: Solve for x
    x = 10,493,411,999.34/88,074.20
  6. Step 6: Final answer
    x = 119,142.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.