Home / 156,747.06-216,300.78-100,152.36

Finding the Fourth Proportional to 156,747.06, 216,300.78 and 100,152.36

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Solution

The fourth proportional to 156,747.06, 216,300.78 and 100,152.36 is: 138,203.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,747.06 : 216,300.78 = 100,152.36 : x
  2. Step 2: Convert to fraction form
    156,747.06/216,300.78 = 100,152.36/x
  3. Step 3: Cross multiply
    156,747.06x = 216,300.78 × 100,152.36
  4. Step 4: Simplify right side
    156,747.06x = 21,663,033,586.84
  5. Step 5: Solve for x
    x = 21,663,033,586.84/156,747.06
  6. Step 6: Final answer
    x = 138,203.76

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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.