Home / 261,153.04-391,785.96-81,235.04

Finding the Fourth Proportional to 261,153.04, 391,785.96 and 81,235.04

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Solution

The fourth proportional to 261,153.04, 391,785.96 and 81,235.04 is: 121,870.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,153.04 : 391,785.96 = 81,235.04 : x
  2. Step 2: Convert to fraction form
    261,153.04/391,785.96 = 81,235.04/x
  3. Step 3: Cross multiply
    261,153.04x = 391,785.96 × 81,235.04
  4. Step 4: Simplify right side
    261,153.04x = 31,826,748,132.04
  5. Step 5: Solve for x
    x = 31,826,748,132.04/261,153.04
  6. Step 6: Final answer
    x = 121,870.10

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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.