Home / 128,090.52-176,754.42-74,358.36

Finding the Fourth Proportional to 128,090.52, 176,754.42 and 74,358.36

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Solution

The fourth proportional to 128,090.52, 176,754.42 and 74,358.36 is: 102,608.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,090.52 : 176,754.42 = 74,358.36 : x
  2. Step 2: Convert to fraction form
    128,090.52/176,754.42 = 74,358.36/x
  3. Step 3: Cross multiply
    128,090.52x = 176,754.42 × 74,358.36
  4. Step 4: Simplify right side
    128,090.52x = 13,143,168,793.95
  5. Step 5: Solve for x
    x = 13,143,168,793.95/128,090.52
  6. Step 6: Final answer
    x = 102,608.44

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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.