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Finding the Fourth Proportional to 145,079.12, 217,461.70 and 60,885

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Solution

The fourth proportional to 145,079.12, 217,461.70 and 60,885 is: 91,261.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,079.12 : 217,461.70 = 60,885 : x
  2. Step 2: Convert to fraction form
    145,079.12/217,461.70 = 60,885/x
  3. Step 3: Cross multiply
    145,079.12x = 217,461.70 × 60,885
  4. Step 4: Simplify right side
    145,079.12x = 13,240,155,604.50
  5. Step 5: Solve for x
    x = 13,240,155,604.50/145,079.12
  6. Step 6: Final answer
    x = 91,261.62

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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.