Home / 154,211.41-212,746.57-103,240.54

Finding the Fourth Proportional to 154,211.41, 212,746.57 and 103,240.54

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Solution

The fourth proportional to 154,211.41, 212,746.57 and 103,240.54 is: 142,428.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,211.41 : 212,746.57 = 103,240.54 : x
  2. Step 2: Convert to fraction form
    154,211.41/212,746.57 = 103,240.54/x
  3. Step 3: Cross multiply
    154,211.41x = 212,746.57 × 103,240.54
  4. Step 4: Simplify right side
    154,211.41x = 21,964,070,769.95
  5. Step 5: Solve for x
    x = 21,964,070,769.95/154,211.41
  6. Step 6: Final answer
    x = 142,428.31

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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.