Home / 128,251.04-176,986.05-71,662.46

Finding the Fourth Proportional to 128,251.04, 176,986.05 and 71,662.46

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Solution

The fourth proportional to 128,251.04, 176,986.05 and 71,662.46 is: 98,893.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,251.04 : 176,986.05 = 71,662.46 : x
  2. Step 2: Convert to fraction form
    128,251.04/176,986.05 = 71,662.46/x
  3. Step 3: Cross multiply
    128,251.04x = 176,986.05 × 71,662.46
  4. Step 4: Simplify right side
    128,251.04x = 12,683,254,843.75
  5. Step 5: Solve for x
    x = 12,683,254,843.75/128,251.04
  6. Step 6: Final answer
    x = 98,893.98

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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.