Home / 100,840.10-151,260.15-87,016.10

Finding the Fourth Proportional to 100,840.10, 151,260.15 and 87,016.10

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Solution

The fourth proportional to 100,840.10, 151,260.15 and 87,016.10 is: 130,524.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,840.10 : 151,260.15 = 87,016.10 : x
  2. Step 2: Convert to fraction form
    100,840.10/151,260.15 = 87,016.10/x
  3. Step 3: Cross multiply
    100,840.10x = 151,260.15 × 87,016.10
  4. Step 4: Simplify right side
    100,840.10x = 13,162,068,338.42
  5. Step 5: Solve for x
    x = 13,162,068,338.42/100,840.10
  6. Step 6: Final answer
    x = 130,524.15

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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.