Home / 108,538.10-162,807.15-77,045.30

Finding the Fourth Proportional to 108,538.10, 162,807.15 and 77,045.30

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Solution

The fourth proportional to 108,538.10, 162,807.15 and 77,045.30 is: 115,567.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,538.10 : 162,807.15 = 77,045.30 : x
  2. Step 2: Convert to fraction form
    108,538.10/162,807.15 = 77,045.30/x
  3. Step 3: Cross multiply
    108,538.10x = 162,807.15 × 77,045.30
  4. Step 4: Simplify right side
    108,538.10x = 12,543,525,713.90
  5. Step 5: Solve for x
    x = 12,543,525,713.90/108,538.10
  6. Step 6: Final answer
    x = 115,567.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.