Home / 261,566.56-392,077.68-121,209.76

Finding the Fourth Proportional to 261,566.56, 392,077.68 and 121,209.76

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Solution

The fourth proportional to 261,566.56, 392,077.68 and 121,209.76 is: 181,688.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,566.56 : 392,077.68 = 121,209.76 : x
  2. Step 2: Convert to fraction form
    261,566.56/392,077.68 = 121,209.76/x
  3. Step 3: Cross multiply
    261,566.56x = 392,077.68 × 121,209.76
  4. Step 4: Simplify right side
    261,566.56x = 47,523,641,494.16
  5. Step 5: Solve for x
    x = 47,523,641,494.16/261,566.56
  6. Step 6: Final answer
    x = 181,688.52

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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.