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Finding the Fourth Proportional to 145,941.70, 218,912.55 and 52,456.90

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Solution

The fourth proportional to 145,941.70, 218,912.55 and 52,456.90 is: 78,685.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,941.70 : 218,912.55 = 52,456.90 : x
  2. Step 2: Convert to fraction form
    145,941.70/218,912.55 = 52,456.90/x
  3. Step 3: Cross multiply
    145,941.70x = 218,912.55 × 52,456.90
  4. Step 4: Simplify right side
    145,941.70x = 11,483,473,744.10
  5. Step 5: Solve for x
    x = 11,483,473,744.10/145,941.70
  6. Step 6: Final answer
    x = 78,685.35

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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.