Home / 122,456.10-183,792.15-72,473.70

Finding the Fourth Proportional to 122,456.10, 183,792.15 and 72,473.70

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Solution

The fourth proportional to 122,456.10, 183,792.15 and 72,473.70 is: 108,774.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,456.10 : 183,792.15 = 72,473.70 : x
  2. Step 2: Convert to fraction form
    122,456.10/183,792.15 = 72,473.70/x
  3. Step 3: Cross multiply
    122,456.10x = 183,792.15 × 72,473.70
  4. Step 4: Simplify right side
    122,456.10x = 13,320,097,141.46
  5. Step 5: Solve for x
    x = 13,320,097,141.46/122,456.10
  6. Step 6: Final answer
    x = 108,774.47

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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.