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Finding the Fourth Proportional to 122,948.80, 184,423.20 and 60,611.20

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Solution

The fourth proportional to 122,948.80, 184,423.20 and 60,611.20 is: 90,916.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,948.80 : 184,423.20 = 60,611.20 : x
  2. Step 2: Convert to fraction form
    122,948.80/184,423.20 = 60,611.20/x
  3. Step 3: Cross multiply
    122,948.80x = 184,423.20 × 60,611.20
  4. Step 4: Simplify right side
    122,948.80x = 11,178,111,459.84
  5. Step 5: Solve for x
    x = 11,178,111,459.84/122,948.80
  6. Step 6: Final answer
    x = 90,916.80

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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.