Home / 128,248.04-176,981.91-71,659.46

Finding the Fourth Proportional to 128,248.04, 176,981.91 and 71,659.46

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Solution

The fourth proportional to 128,248.04, 176,981.91 and 71,659.46 is: 98,889.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,248.04 : 176,981.91 = 71,659.46 : x
  2. Step 2: Convert to fraction form
    128,248.04/176,981.91 = 71,659.46/x
  3. Step 3: Cross multiply
    128,248.04x = 176,981.91 × 71,659.46
  4. Step 4: Simplify right side
    128,248.04x = 12,682,427,215.46
  5. Step 5: Solve for x
    x = 12,682,427,215.46/128,248.04
  6. Step 6: Final answer
    x = 98,889.84

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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.