Home / 115,197.12-159,017.85-99,000.36

Finding the Fourth Proportional to 115,197.12, 159,017.85 and 99,000.36

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Solution

The fourth proportional to 115,197.12, 159,017.85 and 99,000.36 is: 136,659.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,197.12 : 159,017.85 = 99,000.36 : x
  2. Step 2: Convert to fraction form
    115,197.12/159,017.85 = 99,000.36/x
  3. Step 3: Cross multiply
    115,197.12x = 159,017.85 × 99,000.36
  4. Step 4: Simplify right side
    115,197.12x = 15,742,824,396.43
  5. Step 5: Solve for x
    x = 15,742,824,396.43/115,197.12
  6. Step 6: Final answer
    x = 136,659.88

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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.