Home / 122,089.52-183,966.18-100,389

Finding the Fourth Proportional to 122,089.52, 183,966.18 and 100,389

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Solution

The fourth proportional to 122,089.52, 183,966.18 and 100,389 is: 151,267.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,089.52 : 183,966.18 = 100,389 : x
  2. Step 2: Convert to fraction form
    122,089.52/183,966.18 = 100,389/x
  3. Step 3: Cross multiply
    122,089.52x = 183,966.18 × 100,389
  4. Step 4: Simplify right side
    122,089.52x = 18,468,180,844.02
  5. Step 5: Solve for x
    x = 18,468,180,844.02/122,089.52
  6. Step 6: Final answer
    x = 151,267.54

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.