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Finding the Fourth Proportional to 145,391.57, 218,087.49 and 45,559.55

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Solution

The fourth proportional to 145,391.57, 218,087.49 and 45,559.55 is: 68,339.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,391.57 : 218,087.49 = 45,559.55 : x
  2. Step 2: Convert to fraction form
    145,391.57/218,087.49 = 45,559.55/x
  3. Step 3: Cross multiply
    145,391.57x = 218,087.49 × 45,559.55
  4. Step 4: Simplify right side
    145,391.57x = 9,935,966,814.59
  5. Step 5: Solve for x
    x = 9,935,966,814.59/145,391.57
  6. Step 6: Final answer
    x = 68,339.36

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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.