Home / 98,439.28-135,798.93-64,432.78

Finding the Fourth Proportional to 98,439.28, 135,798.93 and 64,432.78

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Solution

The fourth proportional to 98,439.28, 135,798.93 and 64,432.78 is: 88,886.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,439.28 : 135,798.93 = 64,432.78 : x
  2. Step 2: Convert to fraction form
    98,439.28/135,798.93 = 64,432.78/x
  3. Step 3: Cross multiply
    98,439.28x = 135,798.93 × 64,432.78
  4. Step 4: Simplify right side
    98,439.28x = 8,749,902,241.43
  5. Step 5: Solve for x
    x = 8,749,902,241.43/98,439.28
  6. Step 6: Final answer
    x = 88,886.29

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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.