Home / 102,004.79-140,767.40-56,686.97

Finding the Fourth Proportional to 102,004.79, 140,767.40 and 56,686.97

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Solution

The fourth proportional to 102,004.79, 140,767.40 and 56,686.97 is: 78,228.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,004.79 : 140,767.40 = 56,686.97 : x
  2. Step 2: Convert to fraction form
    102,004.79/140,767.40 = 56,686.97/x
  3. Step 3: Cross multiply
    102,004.79x = 140,767.40 × 56,686.97
  4. Step 4: Simplify right side
    102,004.79x = 7,979,677,874.41
  5. Step 5: Solve for x
    x = 7,979,677,874.41/102,004.79
  6. Step 6: Final answer
    x = 78,228.47

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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.