Home / 212,347.72-318,554.36-77,423.16

Finding the Fourth Proportional to 212,347.72, 318,554.36 and 77,423.16

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Solution

The fourth proportional to 212,347.72, 318,554.36 and 77,423.16 is: 116,146.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,347.72 : 318,554.36 = 77,423.16 : x
  2. Step 2: Convert to fraction form
    212,347.72/318,554.36 = 77,423.16/x
  3. Step 3: Cross multiply
    212,347.72x = 318,554.36 × 77,423.16
  4. Step 4: Simplify right side
    212,347.72x = 24,663,485,182.98
  5. Step 5: Solve for x
    x = 24,663,485,182.98/212,347.72
  6. Step 6: Final answer
    x = 116,146.69

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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.