Home / 102,942.92-142,041.04-64,680.30

Finding the Fourth Proportional to 102,942.92, 142,041.04 and 64,680.30

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Solution

The fourth proportional to 102,942.92, 142,041.04 and 64,680.30 is: 89,246.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,942.92 : 142,041.04 = 64,680.30 : x
  2. Step 2: Convert to fraction form
    102,942.92/142,041.04 = 64,680.30/x
  3. Step 3: Cross multiply
    102,942.92x = 142,041.04 × 64,680.30
  4. Step 4: Simplify right side
    102,942.92x = 9,187,257,079.51
  5. Step 5: Solve for x
    x = 9,187,257,079.51/102,942.92
  6. Step 6: Final answer
    x = 89,246.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.