Home / 103,581.09-142,961.52-64,836.87

Finding the Fourth Proportional to 103,581.09, 142,961.52 and 64,836.87

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Solution

The fourth proportional to 103,581.09, 142,961.52 and 64,836.87 is: 89,487.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,581.09 : 142,961.52 = 64,836.87 : x
  2. Step 2: Convert to fraction form
    103,581.09/142,961.52 = 64,836.87/x
  3. Step 3: Cross multiply
    103,581.09x = 142,961.52 × 64,836.87
  4. Step 4: Simplify right side
    103,581.09x = 9,269,177,487.24
  5. Step 5: Solve for x
    x = 9,269,177,487.24/103,581.09
  6. Step 6: Final answer
    x = 89,487.16

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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.