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Finding the Fourth Proportional to 132,929.60, 199,394.40 and 103,438.40

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Solution

The fourth proportional to 132,929.60, 199,394.40 and 103,438.40 is: 155,157.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,929.60 : 199,394.40 = 103,438.40 : x
  2. Step 2: Convert to fraction form
    132,929.60/199,394.40 = 103,438.40/x
  3. Step 3: Cross multiply
    132,929.60x = 199,394.40 × 103,438.40
  4. Step 4: Simplify right side
    132,929.60x = 20,625,037,704.96
  5. Step 5: Solve for x
    x = 20,625,037,704.96/132,929.60
  6. Step 6: Final answer
    x = 155,157.60

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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.