Home / 105,156.44-145,116.12-57,409.80

Finding the Fourth Proportional to 105,156.44, 145,116.12 and 57,409.80

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Solution

The fourth proportional to 105,156.44, 145,116.12 and 57,409.80 is: 79,225.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,156.44 : 145,116.12 = 57,409.80 : x
  2. Step 2: Convert to fraction form
    105,156.44/145,116.12 = 57,409.80/x
  3. Step 3: Cross multiply
    105,156.44x = 145,116.12 × 57,409.80
  4. Step 4: Simplify right side
    105,156.44x = 8,331,087,425.98
  5. Step 5: Solve for x
    x = 8,331,087,425.98/105,156.44
  6. Step 6: Final answer
    x = 79,225.65

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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.