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Finding the Fourth Proportional to 107,988.64, 148,973.52 and 70,249.12

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Solution

The fourth proportional to 107,988.64, 148,973.52 and 70,249.12 is: 96,910.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,988.64 : 148,973.52 = 70,249.12 : x
  2. Step 2: Convert to fraction form
    107,988.64/148,973.52 = 70,249.12/x
  3. Step 3: Cross multiply
    107,988.64x = 148,973.52 × 70,249.12
  4. Step 4: Simplify right side
    107,988.64x = 10,465,258,683.30
  5. Step 5: Solve for x
    x = 10,465,258,683.30/107,988.64
  6. Step 6: Final answer
    x = 96,910.74

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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.