Home / 105,689.06-145,846.31-63,270.98

Finding the Fourth Proportional to 105,689.06, 145,846.31 and 63,270.98

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Solution

The fourth proportional to 105,689.06, 145,846.31 and 63,270.98 is: 87,311.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,689.06 : 145,846.31 = 63,270.98 : x
  2. Step 2: Convert to fraction form
    105,689.06/145,846.31 = 63,270.98/x
  3. Step 3: Cross multiply
    105,689.06x = 145,846.31 × 63,270.98
  4. Step 4: Simplify right side
    105,689.06x = 9,227,837,917.50
  5. Step 5: Solve for x
    x = 9,227,837,917.50/105,689.06
  6. Step 6: Final answer
    x = 87,311.20

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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.