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Finding the Fourth Proportional to 130,440.80, 195,661.20 and 83,784.80

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Solution

The fourth proportional to 130,440.80, 195,661.20 and 83,784.80 is: 125,677.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,440.80 : 195,661.20 = 83,784.80 : x
  2. Step 2: Convert to fraction form
    130,440.80/195,661.20 = 83,784.80/x
  3. Step 3: Cross multiply
    130,440.80x = 195,661.20 × 83,784.80
  4. Step 4: Simplify right side
    130,440.80x = 16,393,434,509.76
  5. Step 5: Solve for x
    x = 16,393,434,509.76/130,440.80
  6. Step 6: Final answer
    x = 125,677.20

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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.