Home / 128,767.20-193,150.80-109,740.30

Finding the Fourth Proportional to 128,767.20, 193,150.80 and 109,740.30

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Solution

The fourth proportional to 128,767.20, 193,150.80 and 109,740.30 is: 164,610.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,767.20 : 193,150.80 = 109,740.30 : x
  2. Step 2: Convert to fraction form
    128,767.20/193,150.80 = 109,740.30/x
  3. Step 3: Cross multiply
    128,767.20x = 193,150.80 × 109,740.30
  4. Step 4: Simplify right side
    128,767.20x = 21,196,426,737.24
  5. Step 5: Solve for x
    x = 21,196,426,737.24/128,767.20
  6. Step 6: Final answer
    x = 164,610.45

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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.