Home / 105,305.90-157,870-49,116.41

Finding the Fourth Proportional to 105,305.90, 157,870 and 49,116.41

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Solution

The fourth proportional to 105,305.90, 157,870 and 49,116.41 is: 73,633.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,305.90 : 157,870 = 49,116.41 : x
  2. Step 2: Convert to fraction form
    105,305.90/157,870 = 49,116.41/x
  3. Step 3: Cross multiply
    105,305.90x = 157,870 × 49,116.41
  4. Step 4: Simplify right side
    105,305.90x = 7,754,007,646.70
  5. Step 5: Solve for x
    x = 7,754,007,646.70/105,305.90
  6. Step 6: Final answer
    x = 73,633.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.