Home / 142,043.11-213,146.07-57,787.72

Finding the Fourth Proportional to 142,043.11, 213,146.07 and 57,787.72

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Solution

The fourth proportional to 142,043.11, 213,146.07 and 57,787.72 is: 86,714.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,043.11 : 213,146.07 = 57,787.72 : x
  2. Step 2: Convert to fraction form
    142,043.11/213,146.07 = 57,787.72/x
  3. Step 3: Cross multiply
    142,043.11x = 213,146.07 × 57,787.72
  4. Step 4: Simplify right side
    142,043.11x = 12,317,225,412.26
  5. Step 5: Solve for x
    x = 12,317,225,412.26/142,043.11
  6. Step 6: Final answer
    x = 86,714.70

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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.