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Finding the Fourth Proportional to 125,303.86, 172,927.20 and 68,715.25

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Solution

The fourth proportional to 125,303.86, 172,927.20 and 68,715.25 is: 94,831.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,303.86 : 172,927.20 = 68,715.25 : x
  2. Step 2: Convert to fraction form
    125,303.86/172,927.20 = 68,715.25/x
  3. Step 3: Cross multiply
    125,303.86x = 172,927.20 × 68,715.25
  4. Step 4: Simplify right side
    125,303.86x = 11,882,735,779.80
  5. Step 5: Solve for x
    x = 11,882,735,779.80/125,303.86
  6. Step 6: Final answer
    x = 94,831.36

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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.