Home / 130,438.20-195,743.70-74,278.20

Finding the Fourth Proportional to 130,438.20, 195,743.70 and 74,278.20

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Solution

The fourth proportional to 130,438.20, 195,743.70 and 74,278.20 is: 111,466.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,438.20 : 195,743.70 = 74,278.20 : x
  2. Step 2: Convert to fraction form
    130,438.20/195,743.70 = 74,278.20/x
  3. Step 3: Cross multiply
    130,438.20x = 195,743.70 × 74,278.20
  4. Step 4: Simplify right side
    130,438.20x = 14,539,489,697.34
  5. Step 5: Solve for x
    x = 14,539,489,697.34/130,438.20
  6. Step 6: Final answer
    x = 111,466.50

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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.