Home / 212,201.78-318,275.51-70,011.86

Finding the Fourth Proportional to 212,201.78, 318,275.51 and 70,011.86

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Solution

The fourth proportional to 212,201.78, 318,275.51 and 70,011.86 is: 105,008.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,201.78 : 318,275.51 = 70,011.86 : x
  2. Step 2: Convert to fraction form
    212,201.78/318,275.51 = 70,011.86/x
  3. Step 3: Cross multiply
    212,201.78x = 318,275.51 × 70,011.86
  4. Step 4: Simplify right side
    212,201.78x = 22,283,058,506.11
  5. Step 5: Solve for x
    x = 22,283,058,506.11/212,201.78
  6. Step 6: Final answer
    x = 105,008.82

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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.