Home / 142,005.96-195,968-77,475.20

Finding the Fourth Proportional to 142,005.96, 195,968 and 77,475.20

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Solution

The fourth proportional to 142,005.96, 195,968 and 77,475.20 is: 106,915.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,005.96 : 195,968 = 77,475.20 : x
  2. Step 2: Convert to fraction form
    142,005.96/195,968 = 77,475.20/x
  3. Step 3: Cross multiply
    142,005.96x = 195,968 × 77,475.20
  4. Step 4: Simplify right side
    142,005.96x = 15,182,659,993.60
  5. Step 5: Solve for x
    x = 15,182,659,993.60/142,005.96
  6. Step 6: Final answer
    x = 106,915.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.