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Finding the Fourth Proportional to 123,401.60, 185,296.80 and 70,913.60

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Solution

The fourth proportional to 123,401.60, 185,296.80 and 70,913.60 is: 106,482.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,401.60 : 185,296.80 = 70,913.60 : x
  2. Step 2: Convert to fraction form
    123,401.60/185,296.80 = 70,913.60/x
  3. Step 3: Cross multiply
    123,401.60x = 185,296.80 × 70,913.60
  4. Step 4: Simplify right side
    123,401.60x = 13,140,063,156.48
  5. Step 5: Solve for x
    x = 13,140,063,156.48/123,401.60
  6. Step 6: Final answer
    x = 106,482.11

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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.