Home / 103,692.12-143,108.98-58,378.92

Finding the Fourth Proportional to 103,692.12, 143,108.98 and 58,378.92

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Solution

The fourth proportional to 103,692.12, 143,108.98 and 58,378.92 is: 80,570.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,692.12 : 143,108.98 = 58,378.92 : x
  2. Step 2: Convert to fraction form
    103,692.12/143,108.98 = 58,378.92/x
  3. Step 3: Cross multiply
    103,692.12x = 143,108.98 × 58,378.92
  4. Step 4: Simplify right side
    103,692.12x = 8,354,547,694.70
  5. Step 5: Solve for x
    x = 8,354,547,694.70/103,692.12
  6. Step 6: Final answer
    x = 80,570.71

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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.