Home / 142,027.20-196,007.04-81,617.40

Finding the Fourth Proportional to 142,027.20, 196,007.04 and 81,617.40

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Solution

The fourth proportional to 142,027.20, 196,007.04 and 81,617.40 is: 112,637.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,027.20 : 196,007.04 = 81,617.40 : x
  2. Step 2: Convert to fraction form
    142,027.20/196,007.04 = 81,617.40/x
  3. Step 3: Cross multiply
    142,027.20x = 196,007.04 × 81,617.40
  4. Step 4: Simplify right side
    142,027.20x = 15,997,584,986.50
  5. Step 5: Solve for x
    x = 15,997,584,986.50/142,027.20
  6. Step 6: Final answer
    x = 112,637.47

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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.