Home / 122,445.60-183,776.40-72,463.20

Finding the Fourth Proportional to 122,445.60, 183,776.40 and 72,463.20

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Solution

The fourth proportional to 122,445.60, 183,776.40 and 72,463.20 is: 108,758.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,445.60 : 183,776.40 = 72,463.20 : x
  2. Step 2: Convert to fraction form
    122,445.60/183,776.40 = 72,463.20/x
  3. Step 3: Cross multiply
    122,445.60x = 183,776.40 × 72,463.20
  4. Step 4: Simplify right side
    122,445.60x = 13,317,026,028.48
  5. Step 5: Solve for x
    x = 13,317,026,028.48/122,445.60
  6. Step 6: Final answer
    x = 108,758.71

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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.