Home / 142,143.28-213,225.18-40,937.20

Finding the Fourth Proportional to 142,143.28, 213,225.18 and 40,937.20

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Solution

The fourth proportional to 142,143.28, 213,225.18 and 40,937.20 is: 61,408.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,143.28 : 213,225.18 = 40,937.20 : x
  2. Step 2: Convert to fraction form
    142,143.28/213,225.18 = 40,937.20/x
  3. Step 3: Cross multiply
    142,143.28x = 213,225.18 × 40,937.20
  4. Step 4: Simplify right side
    142,143.28x = 8,728,841,838.70
  5. Step 5: Solve for x
    x = 8,728,841,838.70/142,143.28
  6. Step 6: Final answer
    x = 61,408.75

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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.