Home / 129,252.51-178,385.09-72,674.82

Finding the Fourth Proportional to 129,252.51, 178,385.09 and 72,674.82

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Solution

The fourth proportional to 129,252.51, 178,385.09 and 72,674.82 is: 100,300.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,252.51 : 178,385.09 = 72,674.82 : x
  2. Step 2: Convert to fraction form
    129,252.51/178,385.09 = 72,674.82/x
  3. Step 3: Cross multiply
    129,252.51x = 178,385.09 × 72,674.82
  4. Step 4: Simplify right side
    129,252.51x = 12,964,103,943.06
  5. Step 5: Solve for x
    x = 12,964,103,943.06/129,252.51
  6. Step 6: Final answer
    x = 100,300.60

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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.