Home / 205,066.60-307,643.10-80,407.24

Finding the Fourth Proportional to 205,066.60, 307,643.10 and 80,407.24

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Solution

The fourth proportional to 205,066.60, 307,643.10 and 80,407.24 is: 120,627.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,066.60 : 307,643.10 = 80,407.24 : x
  2. Step 2: Convert to fraction form
    205,066.60/307,643.10 = 80,407.24/x
  3. Step 3: Cross multiply
    205,066.60x = 307,643.10 × 80,407.24
  4. Step 4: Simplify right side
    205,066.60x = 24,736,732,576.04
  5. Step 5: Solve for x
    x = 24,736,732,576.04/205,066.60
  6. Step 6: Final answer
    x = 120,627.80

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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.