Home / 207,780.10-311,686.35-89,455.30

Finding the Fourth Proportional to 207,780.10, 311,686.35 and 89,455.30

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Solution

The fourth proportional to 207,780.10, 311,686.35 and 89,455.30 is: 134,189.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,780.10 : 311,686.35 = 89,455.30 : x
  2. Step 2: Convert to fraction form
    207,780.10/311,686.35 = 89,455.30/x
  3. Step 3: Cross multiply
    207,780.10x = 311,686.35 × 89,455.30
  4. Step 4: Simplify right side
    207,780.10x = 27,881,995,945.16
  5. Step 5: Solve for x
    x = 27,881,995,945.16/207,780.10
  6. Step 6: Final answer
    x = 134,189.92

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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.