Home / 105,583.04-145,680.96-63,134.72

Finding the Fourth Proportional to 105,583.04, 145,680.96 and 63,134.72

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Solution

The fourth proportional to 105,583.04, 145,680.96 and 63,134.72 is: 87,111.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,583.04 : 145,680.96 = 63,134.72 : x
  2. Step 2: Convert to fraction form
    105,583.04/145,680.96 = 63,134.72/x
  3. Step 3: Cross multiply
    105,583.04x = 145,680.96 × 63,134.72
  4. Step 4: Simplify right side
    105,583.04x = 9,197,526,618.93
  5. Step 5: Solve for x
    x = 9,197,526,618.93/105,583.04
  6. Step 6: Final answer
    x = 87,111.78

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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.