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Finding the Fourth Proportional to 145,049.40, 217,314.90 and 124,313.40

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Solution

The fourth proportional to 145,049.40, 217,314.90 and 124,313.40 is: 186,247.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,049.40 : 217,314.90 = 124,313.40 : x
  2. Step 2: Convert to fraction form
    145,049.40/217,314.90 = 124,313.40/x
  3. Step 3: Cross multiply
    145,049.40x = 217,314.90 × 124,313.40
  4. Step 4: Simplify right side
    145,049.40x = 27,015,154,089.66
  5. Step 5: Solve for x
    x = 27,015,154,089.66/145,049.40
  6. Step 6: Final answer
    x = 186,247.95

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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.