Home / 261,177.40-391,649.46-74,145.16

Finding the Fourth Proportional to 261,177.40, 391,649.46 and 74,145.16

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Solution

The fourth proportional to 261,177.40, 391,649.46 and 74,145.16 is: 111,184.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,177.40 : 391,649.46 = 74,145.16 : x
  2. Step 2: Convert to fraction form
    261,177.40/391,649.46 = 74,145.16/x
  3. Step 3: Cross multiply
    261,177.40x = 391,649.46 × 74,145.16
  4. Step 4: Simplify right side
    261,177.40x = 29,038,911,875.61
  5. Step 5: Solve for x
    x = 29,038,911,875.61/261,177.40
  6. Step 6: Final answer
    x = 111,184.63

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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.