Home / 102,623.94-141,701.13-78,712.74

Finding the Fourth Proportional to 102,623.94, 141,701.13 and 78,712.74

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Solution

The fourth proportional to 102,623.94, 141,701.13 and 78,712.74 is: 108,685.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,623.94 : 141,701.13 = 78,712.74 : x
  2. Step 2: Convert to fraction form
    102,623.94/141,701.13 = 78,712.74/x
  3. Step 3: Cross multiply
    102,623.94x = 141,701.13 × 78,712.74
  4. Step 4: Simplify right side
    102,623.94x = 11,153,684,203.40
  5. Step 5: Solve for x
    x = 11,153,684,203.40/102,623.94
  6. Step 6: Final answer
    x = 108,685.01

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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.