Home / 125,545.32-188,317.56-78,831

Finding the Fourth Proportional to 125,545.32, 188,317.56 and 78,831

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Solution

The fourth proportional to 125,545.32, 188,317.56 and 78,831 is: 118,246.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,545.32 : 188,317.56 = 78,831 : x
  2. Step 2: Convert to fraction form
    125,545.32/188,317.56 = 78,831/x
  3. Step 3: Cross multiply
    125,545.32x = 188,317.56 × 78,831
  4. Step 4: Simplify right side
    125,545.32x = 14,845,261,572.36
  5. Step 5: Solve for x
    x = 14,845,261,572.36/125,545.32
  6. Step 6: Final answer
    x = 118,246.24

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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.