Home / 108,436.10-149,641.80-60,689.45

Finding the Fourth Proportional to 108,436.10, 149,641.80 and 60,689.45

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Solution

The fourth proportional to 108,436.10, 149,641.80 and 60,689.45 is: 83,751.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,436.10 : 149,641.80 = 60,689.45 : x
  2. Step 2: Convert to fraction form
    108,436.10/149,641.80 = 60,689.45/x
  3. Step 3: Cross multiply
    108,436.10x = 149,641.80 × 60,689.45
  4. Step 4: Simplify right side
    108,436.10x = 9,081,678,532.10
  5. Step 5: Solve for x
    x = 9,081,678,532.10/108,436.10
  6. Step 6: Final answer
    x = 83,751.43

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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.