Home / 105,019.50-157,529.25-31,147.50

Finding the Fourth Proportional to 105,019.50, 157,529.25 and 31,147.50

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Solution

The fourth proportional to 105,019.50, 157,529.25 and 31,147.50 is: 46,721.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,019.50 : 157,529.25 = 31,147.50 : x
  2. Step 2: Convert to fraction form
    105,019.50/157,529.25 = 31,147.50/x
  3. Step 3: Cross multiply
    105,019.50x = 157,529.25 × 31,147.50
  4. Step 4: Simplify right side
    105,019.50x = 4,906,642,314.38
  5. Step 5: Solve for x
    x = 4,906,642,314.38/105,019.50
  6. Step 6: Final answer
    x = 46,721.25

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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.