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Finding the Fourth Proportional to 248,139.60, 342,415.80 and 134,959.92

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Solution

The fourth proportional to 248,139.60, 342,415.80 and 134,959.92 is: 186,235.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,139.60 : 342,415.80 = 134,959.92 : x
  2. Step 2: Convert to fraction form
    248,139.60/342,415.80 = 134,959.92/x
  3. Step 3: Cross multiply
    248,139.60x = 342,415.80 × 134,959.92
  4. Step 4: Simplify right side
    248,139.60x = 46,212,408,974.74
  5. Step 5: Solve for x
    x = 46,212,408,974.74/248,139.60
  6. Step 6: Final answer
    x = 186,235.53

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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.