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Finding the Fourth Proportional to 145,337.50, 217,981.05 and 40,128.22

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Solution

The fourth proportional to 145,337.50, 217,981.05 and 40,128.22 is: 60,185.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,337.50 : 217,981.05 = 40,128.22 : x
  2. Step 2: Convert to fraction form
    145,337.50/217,981.05 = 40,128.22/x
  3. Step 3: Cross multiply
    145,337.50x = 217,981.05 × 40,128.22
  4. Step 4: Simplify right side
    145,337.50x = 8,747,191,530.23
  5. Step 5: Solve for x
    x = 8,747,191,530.23/145,337.50
  6. Step 6: Final answer
    x = 60,185.37

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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.