Home / 102,112.08-140,913.16-57,399.76

Finding the Fourth Proportional to 102,112.08, 140,913.16 and 57,399.76

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Solution

The fourth proportional to 102,112.08, 140,913.16 and 57,399.76 is: 79,210.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,112.08 : 140,913.16 = 57,399.76 : x
  2. Step 2: Convert to fraction form
    102,112.08/140,913.16 = 57,399.76/x
  3. Step 3: Cross multiply
    102,112.08x = 140,913.16 × 57,399.76
  4. Step 4: Simplify right side
    102,112.08x = 8,088,381,564.84
  5. Step 5: Solve for x
    x = 8,088,381,564.84/102,112.08
  6. Step 6: Final answer
    x = 79,210.82

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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.