Home / 261,177.17-391,634.53-121,034.21

Finding the Fourth Proportional to 261,177.17, 391,634.53 and 121,034.21

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Solution

The fourth proportional to 261,177.17, 391,634.53 and 121,034.21 is: 181,490.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,177.17 : 391,634.53 = 121,034.21 : x
  2. Step 2: Convert to fraction form
    261,177.17/391,634.53 = 121,034.21/x
  3. Step 3: Cross multiply
    261,177.17x = 391,634.53 × 121,034.21
  4. Step 4: Simplify right side
    261,177.17x = 47,401,173,686.51
  5. Step 5: Solve for x
    x = 47,401,173,686.51/261,177.17
  6. Step 6: Final answer
    x = 181,490.50

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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.