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Finding the Fourth Proportional to 128,237.76, 176,952.84 and 70,873.56

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Solution

The fourth proportional to 128,237.76, 176,952.84 and 70,873.56 is: 97,797.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,237.76 : 176,952.84 = 70,873.56 : x
  2. Step 2: Convert to fraction form
    128,237.76/176,952.84 = 70,873.56/x
  3. Step 3: Cross multiply
    128,237.76x = 176,952.84 × 70,873.56
  4. Step 4: Simplify right side
    128,237.76x = 12,541,277,722.91
  5. Step 5: Solve for x
    x = 12,541,277,722.91/128,237.76
  6. Step 6: Final answer
    x = 97,797.07

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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.