Home / 100,576.62-138,807.63-60,312.56

Finding the Fourth Proportional to 100,576.62, 138,807.63 and 60,312.56

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Solution

The fourth proportional to 100,576.62, 138,807.63 and 60,312.56 is: 83,238.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,576.62 : 138,807.63 = 60,312.56 : x
  2. Step 2: Convert to fraction form
    100,576.62/138,807.63 = 60,312.56/x
  3. Step 3: Cross multiply
    100,576.62x = 138,807.63 × 60,312.56
  4. Step 4: Simplify right side
    100,576.62x = 8,371,842,818.79
  5. Step 5: Solve for x
    x = 8,371,842,818.79/100,576.62
  6. Step 6: Final answer
    x = 83,238.46

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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.