Home / 103,856.12-143,321.49-56,109.38

Finding the Fourth Proportional to 103,856.12, 143,321.49 and 56,109.38

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Solution

The fourth proportional to 103,856.12, 143,321.49 and 56,109.38 is: 77,430.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,856.12 : 143,321.49 = 56,109.38 : x
  2. Step 2: Convert to fraction form
    103,856.12/143,321.49 = 56,109.38/x
  3. Step 3: Cross multiply
    103,856.12x = 143,321.49 × 56,109.38
  4. Step 4: Simplify right side
    103,856.12x = 8,041,679,944.58
  5. Step 5: Solve for x
    x = 8,041,679,944.58/103,856.12
  6. Step 6: Final answer
    x = 77,430.97

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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.