Home / 98,438.66-135,798.07-64,432.16

Finding the Fourth Proportional to 98,438.66, 135,798.07 and 64,432.16

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Solution

The fourth proportional to 98,438.66, 135,798.07 and 64,432.16 is: 88,885.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,438.66 : 135,798.07 = 64,432.16 : x
  2. Step 2: Convert to fraction form
    98,438.66/135,798.07 = 64,432.16/x
  3. Step 3: Cross multiply
    98,438.66x = 135,798.07 × 64,432.16
  4. Step 4: Simplify right side
    98,438.66x = 8,749,761,972.78
  5. Step 5: Solve for x
    x = 8,749,761,972.78/98,438.66
  6. Step 6: Final answer
    x = 88,885.43

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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.