Home / 100,887.10-151,330.65-90,000.70

Finding the Fourth Proportional to 100,887.10, 151,330.65 and 90,000.70

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Solution

The fourth proportional to 100,887.10, 151,330.65 and 90,000.70 is: 135,001.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,887.10 : 151,330.65 = 90,000.70 : x
  2. Step 2: Convert to fraction form
    100,887.10/151,330.65 = 90,000.70/x
  3. Step 3: Cross multiply
    100,887.10x = 151,330.65 × 90,000.70
  4. Step 4: Simplify right side
    100,887.10x = 13,619,864,431.46
  5. Step 5: Solve for x
    x = 13,619,864,431.46/100,887.10
  6. Step 6: Final answer
    x = 135,001.05

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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.