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Finding the Fourth Proportional to 143,603.80, 215,664.90 and 104,205.40

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Solution

The fourth proportional to 143,603.80, 215,664.90 and 104,205.40 is: 156,496.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,603.80 : 215,664.90 = 104,205.40 : x
  2. Step 2: Convert to fraction form
    143,603.80/215,664.90 = 104,205.40/x
  3. Step 3: Cross multiply
    143,603.80x = 215,664.90 × 104,205.40
  4. Step 4: Simplify right side
    143,603.80x = 22,473,447,170.46
  5. Step 5: Solve for x
    x = 22,473,447,170.46/143,603.80
  6. Step 6: Final answer
    x = 156,496.19

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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.