Home / 145,128-217,682.28-39,947.88

Finding the Fourth Proportional to 145,128, 217,682.28 and 39,947.88

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Solution

The fourth proportional to 145,128, 217,682.28 and 39,947.88 is: 59,919.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,128 : 217,682.28 = 39,947.88 : x
  2. Step 2: Convert to fraction form
    145,128/217,682.28 = 39,947.88/x
  3. Step 3: Cross multiply
    145,128x = 217,682.28 × 39,947.88
  4. Step 4: Simplify right side
    145,128x = 8,695,945,599.57
  5. Step 5: Solve for x
    x = 8,695,945,599.57/145,128
  6. Step 6: Final answer
    x = 59,919.14

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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.