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Finding the Fourth Proportional to 129,849.70, 194,774.55 and 41,130.40

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Solution

The fourth proportional to 129,849.70, 194,774.55 and 41,130.40 is: 61,695.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,849.70 : 194,774.55 = 41,130.40 : x
  2. Step 2: Convert to fraction form
    129,849.70/194,774.55 = 41,130.40/x
  3. Step 3: Cross multiply
    129,849.70x = 194,774.55 × 41,130.40
  4. Step 4: Simplify right side
    129,849.70x = 8,011,155,151.32
  5. Step 5: Solve for x
    x = 8,011,155,151.32/129,849.70
  6. Step 6: Final answer
    x = 61,695.60

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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.