Home / 128,934.01-177,926.12-71,569.98

Finding the Fourth Proportional to 128,934.01, 177,926.12 and 71,569.98

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Solution

The fourth proportional to 128,934.01, 177,926.12 and 71,569.98 is: 98,765.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,934.01 : 177,926.12 = 71,569.98 : x
  2. Step 2: Convert to fraction form
    128,934.01/177,926.12 = 71,569.98/x
  3. Step 3: Cross multiply
    128,934.01x = 177,926.12 × 71,569.98
  4. Step 4: Simplify right side
    128,934.01x = 12,734,168,760.42
  5. Step 5: Solve for x
    x = 12,734,168,760.42/128,934.01
  6. Step 6: Final answer
    x = 98,765.01

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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.