Home / 148,128.68-204,204.94-105,613.40

Finding the Fourth Proportional to 148,128.68, 204,204.94 and 105,613.40

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Solution

The fourth proportional to 148,128.68, 204,204.94 and 105,613.40 is: 145,594.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,128.68 : 204,204.94 = 105,613.40 : x
  2. Step 2: Convert to fraction form
    148,128.68/204,204.94 = 105,613.40/x
  3. Step 3: Cross multiply
    148,128.68x = 204,204.94 × 105,613.40
  4. Step 4: Simplify right side
    148,128.68x = 21,566,778,010.20
  5. Step 5: Solve for x
    x = 21,566,778,010.20/148,128.68
  6. Step 6: Final answer
    x = 145,594.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.