Home / 142,069.88-213,146.94-47,312.30

Finding the Fourth Proportional to 142,069.88, 213,146.94 and 47,312.30

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Solution

The fourth proportional to 142,069.88, 213,146.94 and 47,312.30 is: 70,982.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,069.88 : 213,146.94 = 47,312.30 : x
  2. Step 2: Convert to fraction form
    142,069.88/213,146.94 = 47,312.30/x
  3. Step 3: Cross multiply
    142,069.88x = 213,146.94 × 47,312.30
  4. Step 4: Simplify right side
    142,069.88x = 10,084,471,969.36
  5. Step 5: Solve for x
    x = 10,084,471,969.36/142,069.88
  6. Step 6: Final answer
    x = 70,982.48

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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.