Home / 144,718.25-216,909.50-85,603.64

Finding the Fourth Proportional to 144,718.25, 216,909.50 and 85,603.64

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Solution

The fourth proportional to 144,718.25, 216,909.50 and 85,603.64 is: 128,306.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,718.25 : 216,909.50 = 85,603.64 : x
  2. Step 2: Convert to fraction form
    144,718.25/216,909.50 = 85,603.64/x
  3. Step 3: Cross multiply
    144,718.25x = 216,909.50 × 85,603.64
  4. Step 4: Simplify right side
    144,718.25x = 18,568,241,238.01
  5. Step 5: Solve for x
    x = 18,568,241,238.01/144,718.25
  6. Step 6: Final answer
    x = 128,306.15

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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.