Home / 212,475.60-318,681.81-79,339.14

Finding the Fourth Proportional to 212,475.60, 318,681.81 and 79,339.14

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Solution

The fourth proportional to 212,475.60, 318,681.81 and 79,339.14 is: 118,996.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,475.60 : 318,681.81 = 79,339.14 : x
  2. Step 2: Convert to fraction form
    212,475.60/318,681.81 = 79,339.14/x
  3. Step 3: Cross multiply
    212,475.60x = 318,681.81 × 79,339.14
  4. Step 4: Simplify right side
    212,475.60x = 25,283,940,739.04
  5. Step 5: Solve for x
    x = 25,283,940,739.04/212,475.60
  6. Step 6: Final answer
    x = 118,996.91

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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.