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Finding the Fourth Proportional to 127,808.32, 176,376.64 and 70,449.72

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Solution

The fourth proportional to 127,808.32, 176,376.64 and 70,449.72 is: 97,221.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,808.32 : 176,376.64 = 70,449.72 : x
  2. Step 2: Convert to fraction form
    127,808.32/176,376.64 = 70,449.72/x
  3. Step 3: Cross multiply
    127,808.32x = 176,376.64 × 70,449.72
  4. Step 4: Simplify right side
    127,808.32x = 12,425,684,902.54
  5. Step 5: Solve for x
    x = 12,425,684,902.54/127,808.32
  6. Step 6: Final answer
    x = 97,221.25

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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.