Home / 102,018.72-140,806.80-64,267.68

Finding the Fourth Proportional to 102,018.72, 140,806.80 and 64,267.68

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Solution

The fourth proportional to 102,018.72, 140,806.80 and 64,267.68 is: 88,702.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,018.72 : 140,806.80 = 64,267.68 : x
  2. Step 2: Convert to fraction form
    102,018.72/140,806.80 = 64,267.68/x
  3. Step 3: Cross multiply
    102,018.72x = 140,806.80 × 64,267.68
  4. Step 4: Simplify right side
    102,018.72x = 9,049,326,364.22
  5. Step 5: Solve for x
    x = 9,049,326,364.22/102,018.72
  6. Step 6: Final answer
    x = 88,702.61

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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.