Home / 138,444.80-207,667.20-91,205.60

Finding the Fourth Proportional to 138,444.80, 207,667.20 and 91,205.60

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Solution

The fourth proportional to 138,444.80, 207,667.20 and 91,205.60 is: 136,808.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,444.80 : 207,667.20 = 91,205.60 : x
  2. Step 2: Convert to fraction form
    138,444.80/207,667.20 = 91,205.60/x
  3. Step 3: Cross multiply
    138,444.80x = 207,667.20 × 91,205.60
  4. Step 4: Simplify right side
    138,444.80x = 18,940,411,576.32
  5. Step 5: Solve for x
    x = 18,940,411,576.32/138,444.80
  6. Step 6: Final answer
    x = 136,808.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.