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Finding the Fourth Proportional to 145,370.88, 200,608.56 and 81,706.56

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Solution

The fourth proportional to 145,370.88, 200,608.56 and 81,706.56 is: 112,753.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,370.88 : 200,608.56 = 81,706.56 : x
  2. Step 2: Convert to fraction form
    145,370.88/200,608.56 = 81,706.56/x
  3. Step 3: Cross multiply
    145,370.88x = 200,608.56 × 81,706.56
  4. Step 4: Simplify right side
    145,370.88x = 16,391,035,344.15
  5. Step 5: Solve for x
    x = 16,391,035,344.15/145,370.88
  6. Step 6: Final answer
    x = 112,753.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.