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Finding the Fourth Proportional to 130,605.60, 195,908.40 and 93,280.80

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Solution

The fourth proportional to 130,605.60, 195,908.40 and 93,280.80 is: 139,921.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,605.60 : 195,908.40 = 93,280.80 : x
  2. Step 2: Convert to fraction form
    130,605.60/195,908.40 = 93,280.80/x
  3. Step 3: Cross multiply
    130,605.60x = 195,908.40 × 93,280.80
  4. Step 4: Simplify right side
    130,605.60x = 18,274,492,278.72
  5. Step 5: Solve for x
    x = 18,274,492,278.72/130,605.60
  6. Step 6: Final answer
    x = 139,921.20

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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.