Home / 122,313.60-183,578.40-72,331.20

Finding the Fourth Proportional to 122,313.60, 183,578.40 and 72,331.20

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Solution

The fourth proportional to 122,313.60, 183,578.40 and 72,331.20 is: 108,560.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,313.60 : 183,578.40 = 72,331.20 : x
  2. Step 2: Convert to fraction form
    122,313.60/183,578.40 = 72,331.20/x
  3. Step 3: Cross multiply
    122,313.60x = 183,578.40 × 72,331.20
  4. Step 4: Simplify right side
    122,313.60x = 13,278,445,966.08
  5. Step 5: Solve for x
    x = 13,278,445,966.08/122,313.60
  6. Step 6: Final answer
    x = 108,560.67

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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.