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Finding the Fourth Proportional to 113,368.80, 169,907.40 and 68,948.40

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Solution

The fourth proportional to 113,368.80, 169,907.40 and 68,948.40 is: 103,333.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,368.80 : 169,907.40 = 68,948.40 : x
  2. Step 2: Convert to fraction form
    113,368.80/169,907.40 = 68,948.40/x
  3. Step 3: Cross multiply
    113,368.80x = 169,907.40 × 68,948.40
  4. Step 4: Simplify right side
    113,368.80x = 11,714,843,378.16
  5. Step 5: Solve for x
    x = 11,714,843,378.16/113,368.80
  6. Step 6: Final answer
    x = 103,333.93

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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.