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Finding the Fourth Proportional to 130,756.77, 195,948.03 and 74,480.70

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Solution

The fourth proportional to 130,756.77, 195,948.03 and 74,480.70 is: 111,614.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,756.77 : 195,948.03 = 74,480.70 : x
  2. Step 2: Convert to fraction form
    130,756.77/195,948.03 = 74,480.70/x
  3. Step 3: Cross multiply
    130,756.77x = 195,948.03 × 74,480.70
  4. Step 4: Simplify right side
    130,756.77x = 14,594,346,438.02
  5. Step 5: Solve for x
    x = 14,594,346,438.02/130,756.77
  6. Step 6: Final answer
    x = 111,614.46

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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.