Home / 137,868.36-206,905.47-102,411.55

Finding the Fourth Proportional to 137,868.36, 206,905.47 and 102,411.55

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Solution

The fourth proportional to 137,868.36, 206,905.47 and 102,411.55 is: 153,693.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,868.36 : 206,905.47 = 102,411.55 : x
  2. Step 2: Convert to fraction form
    137,868.36/206,905.47 = 102,411.55/x
  3. Step 3: Cross multiply
    137,868.36x = 206,905.47 × 102,411.55
  4. Step 4: Simplify right side
    137,868.36x = 21,189,509,886.18
  5. Step 5: Solve for x
    x = 21,189,509,886.18/137,868.36
  6. Step 6: Final answer
    x = 153,693.78

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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.