Home / 102,690.56-141,698.98-57,362.78

Finding the Fourth Proportional to 102,690.56, 141,698.98 and 57,362.78

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Solution

The fourth proportional to 102,690.56, 141,698.98 and 57,362.78 is: 79,152.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,690.56 : 141,698.98 = 57,362.78 : x
  2. Step 2: Convert to fraction form
    102,690.56/141,698.98 = 57,362.78/x
  3. Step 3: Cross multiply
    102,690.56x = 141,698.98 × 57,362.78
  4. Step 4: Simplify right side
    102,690.56x = 8,128,247,415.96
  5. Step 5: Solve for x
    x = 8,128,247,415.96/102,690.56
  6. Step 6: Final answer
    x = 79,152.82

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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.