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Finding the Fourth Proportional to 108,235.72, 149,364.84 and 60,489.06

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Solution

The fourth proportional to 108,235.72, 149,364.84 and 60,489.06 is: 83,474.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,235.72 : 149,364.84 = 60,489.06 : x
  2. Step 2: Convert to fraction form
    108,235.72/149,364.84 = 60,489.06/x
  3. Step 3: Cross multiply
    108,235.72x = 149,364.84 × 60,489.06
  4. Step 4: Simplify right side
    108,235.72x = 9,034,938,768.65
  5. Step 5: Solve for x
    x = 9,034,938,768.65/108,235.72
  6. Step 6: Final answer
    x = 83,474.65

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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.