Home / 113,814.10-170,721.15-78,384.70

Finding the Fourth Proportional to 113,814.10, 170,721.15 and 78,384.70

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Solution

The fourth proportional to 113,814.10, 170,721.15 and 78,384.70 is: 117,577.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,814.10 : 170,721.15 = 78,384.70 : x
  2. Step 2: Convert to fraction form
    113,814.10/170,721.15 = 78,384.70/x
  3. Step 3: Cross multiply
    113,814.10x = 170,721.15 × 78,384.70
  4. Step 4: Simplify right side
    113,814.10x = 13,381,926,126.41
  5. Step 5: Solve for x
    x = 13,381,926,126.41/113,814.10
  6. Step 6: Final answer
    x = 117,577.05

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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.