Home / 102,212.40-141,054.84-56,891.28

Finding the Fourth Proportional to 102,212.40, 141,054.84 and 56,891.28

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Solution

The fourth proportional to 102,212.40, 141,054.84 and 56,891.28 is: 78,510.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,212.40 : 141,054.84 = 56,891.28 : x
  2. Step 2: Convert to fraction form
    102,212.40/141,054.84 = 56,891.28/x
  3. Step 3: Cross multiply
    102,212.40x = 141,054.84 × 56,891.28
  4. Step 4: Simplify right side
    102,212.40x = 8,024,790,397.80
  5. Step 5: Solve for x
    x = 8,024,790,397.80/102,212.40
  6. Step 6: Final answer
    x = 78,510.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.