Home / 207,985.24-312,010.50-89,690.20

Finding the Fourth Proportional to 207,985.24, 312,010.50 and 89,690.20

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Solution

The fourth proportional to 207,985.24, 312,010.50 and 89,690.20 is: 134,549.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,985.24 : 312,010.50 = 89,690.20 : x
  2. Step 2: Convert to fraction form
    207,985.24/312,010.50 = 89,690.20/x
  3. Step 3: Cross multiply
    207,985.24x = 312,010.50 × 89,690.20
  4. Step 4: Simplify right side
    207,985.24x = 27,984,284,147.10
  5. Step 5: Solve for x
    x = 27,984,284,147.10/207,985.24
  6. Step 6: Final answer
    x = 134,549.38

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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.