Home / 211,029.48-316,442.16-77,972.40

Finding the Fourth Proportional to 211,029.48, 316,442.16 and 77,972.40

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Solution

The fourth proportional to 211,029.48, 316,442.16 and 77,972.40 is: 116,920.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,029.48 : 316,442.16 = 77,972.40 : x
  2. Step 2: Convert to fraction form
    211,029.48/316,442.16 = 77,972.40/x
  3. Step 3: Cross multiply
    211,029.48x = 316,442.16 × 77,972.40
  4. Step 4: Simplify right side
    211,029.48x = 24,673,754,676.38
  5. Step 5: Solve for x
    x = 24,673,754,676.38/211,029.48
  6. Step 6: Final answer
    x = 116,920.89

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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.