Home / 261,143.84-391,715.04-74,155.52

Finding the Fourth Proportional to 261,143.84, 391,715.04 and 74,155.52

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Solution

The fourth proportional to 261,143.84, 391,715.04 and 74,155.52 is: 111,233.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,143.84 : 391,715.04 = 74,155.52 : x
  2. Step 2: Convert to fraction form
    261,143.84/391,715.04 = 74,155.52/x
  3. Step 3: Cross multiply
    261,143.84x = 391,715.04 × 74,155.52
  4. Step 4: Simplify right side
    261,143.84x = 29,047,832,483.02
  5. Step 5: Solve for x
    x = 29,047,832,483.02/261,143.84
  6. Step 6: Final answer
    x = 111,233.08

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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.