Home / 92,958.30-139,437.45-86,543.10

Finding the Fourth Proportional to 92,958.30, 139,437.45 and 86,543.10

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Solution

The fourth proportional to 92,958.30, 139,437.45 and 86,543.10 is: 129,814.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,958.30 : 139,437.45 = 86,543.10 : x
  2. Step 2: Convert to fraction form
    92,958.30/139,437.45 = 86,543.10/x
  3. Step 3: Cross multiply
    92,958.30x = 139,437.45 × 86,543.10
  4. Step 4: Simplify right side
    92,958.30x = 12,067,349,179.10
  5. Step 5: Solve for x
    x = 12,067,349,179.10/92,958.30
  6. Step 6: Final answer
    x = 129,814.65

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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.