Home / 105,689.41-145,857.36-62,694.35

Finding the Fourth Proportional to 105,689.41, 145,857.36 and 62,694.35

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Solution

The fourth proportional to 105,689.41, 145,857.36 and 62,694.35 is: 86,521.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,689.41 : 145,857.36 = 62,694.35 : x
  2. Step 2: Convert to fraction form
    105,689.41/145,857.36 = 62,694.35/x
  3. Step 3: Cross multiply
    105,689.41x = 145,857.36 × 62,694.35
  4. Step 4: Simplify right side
    105,689.41x = 9,144,432,898.49
  5. Step 5: Solve for x
    x = 9,144,432,898.49/105,689.41
  6. Step 6: Final answer
    x = 86,521.75

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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.