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Finding the Fourth Proportional to 89,727.60, 134,445.60 and 84,478.80

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Solution

The fourth proportional to 89,727.60, 134,445.60 and 84,478.80 is: 126,580.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,727.60 : 134,445.60 = 84,478.80 : x
  2. Step 2: Convert to fraction form
    89,727.60/134,445.60 = 84,478.80/x
  3. Step 3: Cross multiply
    89,727.60x = 134,445.60 × 84,478.80
  4. Step 4: Simplify right side
    89,727.60x = 11,357,802,953.28
  5. Step 5: Solve for x
    x = 11,357,802,953.28/89,727.60
  6. Step 6: Final answer
    x = 126,580.93

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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.