Home / 212,013.02-318,035.10-78,893.27

Finding the Fourth Proportional to 212,013.02, 318,035.10 and 78,893.27

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Solution

The fourth proportional to 212,013.02, 318,035.10 and 78,893.27 is: 118,345.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,013.02 : 318,035.10 = 78,893.27 : x
  2. Step 2: Convert to fraction form
    212,013.02/318,035.10 = 78,893.27/x
  3. Step 3: Cross multiply
    212,013.02x = 318,035.10 × 78,893.27
  4. Step 4: Simplify right side
    212,013.02x = 25,090,827,719.45
  5. Step 5: Solve for x
    x = 25,090,827,719.45/212,013.02
  6. Step 6: Final answer
    x = 118,345.69

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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.