Home / 145,417.12-217,736.66-85,396.12

Finding the Fourth Proportional to 145,417.12, 217,736.66 and 85,396.12

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Solution

The fourth proportional to 145,417.12, 217,736.66 and 85,396.12 is: 127,865.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,417.12 : 217,736.66 = 85,396.12 : x
  2. Step 2: Convert to fraction form
    145,417.12/217,736.66 = 85,396.12/x
  3. Step 3: Cross multiply
    145,417.12x = 217,736.66 × 85,396.12
  4. Step 4: Simplify right side
    145,417.12x = 18,593,865,945.76
  5. Step 5: Solve for x
    x = 18,593,865,945.76/145,417.12
  6. Step 6: Final answer
    x = 127,865.73

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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.