Home / 142,794.20-213,932.10-87,325.40

Finding the Fourth Proportional to 142,794.20, 213,932.10 and 87,325.40

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Solution

The fourth proportional to 142,794.20, 213,932.10 and 87,325.40 is: 130,829.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,794.20 : 213,932.10 = 87,325.40 : x
  2. Step 2: Convert to fraction form
    142,794.20/213,932.10 = 87,325.40/x
  3. Step 3: Cross multiply
    142,794.20x = 213,932.10 × 87,325.40
  4. Step 4: Simplify right side
    142,794.20x = 18,681,706,205.34
  5. Step 5: Solve for x
    x = 18,681,706,205.34/142,794.20
  6. Step 6: Final answer
    x = 130,829.59

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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.