Home / 142,130.20-213,137.70-48,587.80

Finding the Fourth Proportional to 142,130.20, 213,137.70 and 48,587.80

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Solution

The fourth proportional to 142,130.20, 213,137.70 and 48,587.80 is: 72,862.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,130.20 : 213,137.70 = 48,587.80 : x
  2. Step 2: Convert to fraction form
    142,130.20/213,137.70 = 48,587.80/x
  3. Step 3: Cross multiply
    142,130.20x = 213,137.70 × 48,587.80
  4. Step 4: Simplify right side
    142,130.20x = 10,355,891,940.06
  5. Step 5: Solve for x
    x = 10,355,891,940.06/142,130.20
  6. Step 6: Final answer
    x = 72,862.01

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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.