Home / 103,811.85-143,181.95-89,496.45

Finding the Fourth Proportional to 103,811.85, 143,181.95 and 89,496.45

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Solution

The fourth proportional to 103,811.85, 143,181.95 and 89,496.45 is: 123,437.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,811.85 : 143,181.95 = 89,496.45 : x
  2. Step 2: Convert to fraction form
    103,811.85/143,181.95 = 89,496.45/x
  3. Step 3: Cross multiply
    103,811.85x = 143,181.95 × 89,496.45
  4. Step 4: Simplify right side
    103,811.85x = 12,814,275,781.60
  5. Step 5: Solve for x
    x = 12,814,275,781.60/103,811.85
  6. Step 6: Final answer
    x = 123,437.51

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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.