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Finding the Fourth Proportional to 128,580.60, 192,841.20 and 48,627.12

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Solution

The fourth proportional to 128,580.60, 192,841.20 and 48,627.12 is: 72,929.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,580.60 : 192,841.20 = 48,627.12 : x
  2. Step 2: Convert to fraction form
    128,580.60/192,841.20 = 48,627.12/x
  3. Step 3: Cross multiply
    128,580.60x = 192,841.20 × 48,627.12
  4. Step 4: Simplify right side
    128,580.60x = 9,377,312,173.34
  5. Step 5: Solve for x
    x = 9,377,312,173.34/128,580.60
  6. Step 6: Final answer
    x = 72,929.45

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1.5x scale

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.