Home / 88,005.60-121,368.96-69,109.92

Finding the Fourth Proportional to 88,005.60, 121,368.96 and 69,109.92

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Solution

The fourth proportional to 88,005.60, 121,368.96 and 69,109.92 is: 95,309.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,005.60 : 121,368.96 = 69,109.92 : x
  2. Step 2: Convert to fraction form
    88,005.60/121,368.96 = 69,109.92/x
  3. Step 3: Cross multiply
    88,005.60x = 121,368.96 × 69,109.92
  4. Step 4: Simplify right side
    88,005.60x = 8,387,799,116.08
  5. Step 5: Solve for x
    x = 8,387,799,116.08/88,005.60
  6. Step 6: Final answer
    x = 95,309.83

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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.