Home / 142,239.16-213,492.66-72,168.76

Finding the Fourth Proportional to 142,239.16, 213,492.66 and 72,168.76

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Solution

The fourth proportional to 142,239.16, 213,492.66 and 72,168.76 is: 108,321.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,239.16 : 213,492.66 = 72,168.76 : x
  2. Step 2: Convert to fraction form
    142,239.16/213,492.66 = 72,168.76/x
  3. Step 3: Cross multiply
    142,239.16x = 213,492.66 × 72,168.76
  4. Step 4: Simplify right side
    142,239.16x = 15,407,500,541.30
  5. Step 5: Solve for x
    x = 15,407,500,541.30/142,239.16
  6. Step 6: Final answer
    x = 108,321.09

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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.