Home / 105,713.06-145,884.63-57,315.35

Finding the Fourth Proportional to 105,713.06, 145,884.63 and 57,315.35

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Solution

The fourth proportional to 105,713.06, 145,884.63 and 57,315.35 is: 79,095.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,713.06 : 145,884.63 = 57,315.35 : x
  2. Step 2: Convert to fraction form
    105,713.06/145,884.63 = 57,315.35/x
  3. Step 3: Cross multiply
    105,713.06x = 145,884.63 × 57,315.35
  4. Step 4: Simplify right side
    105,713.06x = 8,361,427,898.65
  5. Step 5: Solve for x
    x = 8,361,427,898.65/105,713.06
  6. Step 6: Final answer
    x = 79,095.51

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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.