Home / 105,318.06-157,953.81-30,421.95

Finding the Fourth Proportional to 105,318.06, 157,953.81 and 30,421.95

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Solution

The fourth proportional to 105,318.06, 157,953.81 and 30,421.95 is: 45,626.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,318.06 : 157,953.81 = 30,421.95 : x
  2. Step 2: Convert to fraction form
    105,318.06/157,953.81 = 30,421.95/x
  3. Step 3: Cross multiply
    105,318.06x = 157,953.81 × 30,421.95
  4. Step 4: Simplify right side
    105,318.06x = 4,805,262,910.13
  5. Step 5: Solve for x
    x = 4,805,262,910.13/105,318.06
  6. Step 6: Final answer
    x = 45,626.20

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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.