Home / 211,167.40-316,529.16-77,962.72

Finding the Fourth Proportional to 211,167.40, 316,529.16 and 77,962.72

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Solution

The fourth proportional to 211,167.40, 316,529.16 and 77,962.72 is: 116,862.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,167.40 : 316,529.16 = 77,962.72 : x
  2. Step 2: Convert to fraction form
    211,167.40/316,529.16 = 77,962.72/x
  3. Step 3: Cross multiply
    211,167.40x = 316,529.16 × 77,962.72
  4. Step 4: Simplify right side
    211,167.40x = 24,677,474,272.92
  5. Step 5: Solve for x
    x = 24,677,474,272.92/211,167.40
  6. Step 6: Final answer
    x = 116,862.14

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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.