Home / 100,865.60-151,298.40-89,979.20

Finding the Fourth Proportional to 100,865.60, 151,298.40 and 89,979.20

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Solution

The fourth proportional to 100,865.60, 151,298.40 and 89,979.20 is: 134,968.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,865.60 : 151,298.40 = 89,979.20 : x
  2. Step 2: Convert to fraction form
    100,865.60/151,298.40 = 89,979.20/x
  3. Step 3: Cross multiply
    100,865.60x = 151,298.40 × 89,979.20
  4. Step 4: Simplify right side
    100,865.60x = 13,613,708,993.28
  5. Step 5: Solve for x
    x = 13,613,708,993.28/100,865.60
  6. Step 6: Final answer
    x = 134,968.80

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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.