Home / 103,640.10-143,023.34-58,928.10

Finding the Fourth Proportional to 103,640.10, 143,023.34 and 58,928.10

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Solution

The fourth proportional to 103,640.10, 143,023.34 and 58,928.10 is: 81,320.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,640.10 : 143,023.34 = 58,928.10 : x
  2. Step 2: Convert to fraction form
    103,640.10/143,023.34 = 58,928.10/x
  3. Step 3: Cross multiply
    103,640.10x = 143,023.34 × 58,928.10
  4. Step 4: Simplify right side
    103,640.10x = 8,428,093,681.85
  5. Step 5: Solve for x
    x = 8,428,093,681.85/103,640.10
  6. Step 6: Final answer
    x = 81,320.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.