Home / 261,727.98-392,628.69-128,613.48

Finding the Fourth Proportional to 261,727.98, 392,628.69 and 128,613.48

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Solution

The fourth proportional to 261,727.98, 392,628.69 and 128,613.48 is: 192,938.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,727.98 : 392,628.69 = 128,613.48 : x
  2. Step 2: Convert to fraction form
    261,727.98/392,628.69 = 128,613.48/x
  3. Step 3: Cross multiply
    261,727.98x = 392,628.69 × 128,613.48
  4. Step 4: Simplify right side
    261,727.98x = 50,497,342,168.74
  5. Step 5: Solve for x
    x = 50,497,342,168.74/261,727.98
  6. Step 6: Final answer
    x = 192,938.26

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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.