Home / 125,345.25-172,985.70-71,629.11

Finding the Fourth Proportional to 125,345.25, 172,985.70 and 71,629.11

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Solution

The fourth proportional to 125,345.25, 172,985.70 and 71,629.11 is: 98,853.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,345.25 : 172,985.70 = 71,629.11 : x
  2. Step 2: Convert to fraction form
    125,345.25/172,985.70 = 71,629.11/x
  3. Step 3: Cross multiply
    125,345.25x = 172,985.70 × 71,629.11
  4. Step 4: Simplify right side
    125,345.25x = 12,390,811,800.88
  5. Step 5: Solve for x
    x = 12,390,811,800.88/125,345.25
  6. Step 6: Final answer
    x = 98,853.46

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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.