Home / 108,511.80-149,744.94-66,070.20

Finding the Fourth Proportional to 108,511.80, 149,744.94 and 66,070.20

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Solution

The fourth proportional to 108,511.80, 149,744.94 and 66,070.20 is: 91,176.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,511.80 : 149,744.94 = 66,070.20 : x
  2. Step 2: Convert to fraction form
    108,511.80/149,744.94 = 66,070.20/x
  3. Step 3: Cross multiply
    108,511.80x = 149,744.94 × 66,070.20
  4. Step 4: Simplify right side
    108,511.80x = 9,893,678,134.79
  5. Step 5: Solve for x
    x = 9,893,678,134.79/108,511.80
  6. Step 6: Final answer
    x = 91,176.06

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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.