Home / 261,176.40-391,647.96-74,144.16

Finding the Fourth Proportional to 261,176.40, 391,647.96 and 74,144.16

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Solution

The fourth proportional to 261,176.40, 391,647.96 and 74,144.16 is: 111,183.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,176.40 : 391,647.96 = 74,144.16 : x
  2. Step 2: Convert to fraction form
    261,176.40/391,647.96 = 74,144.16/x
  3. Step 3: Cross multiply
    261,176.40x = 391,647.96 × 74,144.16
  4. Step 4: Simplify right side
    261,176.40x = 29,038,409,009.91
  5. Step 5: Solve for x
    x = 29,038,409,009.91/261,176.40
  6. Step 6: Final answer
    x = 111,183.13

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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.