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Finding the Fourth Proportional to 138,673.92, 191,440.80 and 96,158.64

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Solution

The fourth proportional to 138,673.92, 191,440.80 and 96,158.64 is: 132,748.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,673.92 : 191,440.80 = 96,158.64 : x
  2. Step 2: Convert to fraction form
    138,673.92/191,440.80 = 96,158.64/x
  3. Step 3: Cross multiply
    138,673.92x = 191,440.80 × 96,158.64
  4. Step 4: Simplify right side
    138,673.92x = 18,408,686,968.51
  5. Step 5: Solve for x
    x = 18,408,686,968.51/138,673.92
  6. Step 6: Final answer
    x = 132,748.01

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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.