Home / 122,554.86-169,121.34-74,887.98

Finding the Fourth Proportional to 122,554.86, 169,121.34 and 74,887.98

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Solution

The fourth proportional to 122,554.86, 169,121.34 and 74,887.98 is: 103,342.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,554.86 : 169,121.34 = 74,887.98 : x
  2. Step 2: Convert to fraction form
    122,554.86/169,121.34 = 74,887.98/x
  3. Step 3: Cross multiply
    122,554.86x = 169,121.34 × 74,887.98
  4. Step 4: Simplify right side
    122,554.86x = 12,665,155,527.49
  5. Step 5: Solve for x
    x = 12,665,155,527.49/122,554.86
  6. Step 6: Final answer
    x = 103,342.74

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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.