Home / 142,130.70-213,138.45-48,588.30

Finding the Fourth Proportional to 142,130.70, 213,138.45 and 48,588.30

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Solution

The fourth proportional to 142,130.70, 213,138.45 and 48,588.30 is: 72,862.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,130.70 : 213,138.45 = 48,588.30 : x
  2. Step 2: Convert to fraction form
    142,130.70/213,138.45 = 48,588.30/x
  3. Step 3: Cross multiply
    142,130.70x = 213,138.45 × 48,588.30
  4. Step 4: Simplify right side
    142,130.70x = 10,356,034,950.14
  5. Step 5: Solve for x
    x = 10,356,034,950.14/142,130.70
  6. Step 6: Final answer
    x = 72,862.76

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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.