Home / 144,864.90-217,224.45-85,718.70

Finding the Fourth Proportional to 144,864.90, 217,224.45 and 85,718.70

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Solution

The fourth proportional to 144,864.90, 217,224.45 and 85,718.70 is: 128,534.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,864.90 : 217,224.45 = 85,718.70 : x
  2. Step 2: Convert to fraction form
    144,864.90/217,224.45 = 85,718.70/x
  3. Step 3: Cross multiply
    144,864.90x = 217,224.45 × 85,718.70
  4. Step 4: Simplify right side
    144,864.90x = 18,620,197,462.22
  5. Step 5: Solve for x
    x = 18,620,197,462.22/144,864.90
  6. Step 6: Final answer
    x = 128,534.91

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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.