Home / 131,484.75-181,441.14-76,289.81

Finding the Fourth Proportional to 131,484.75, 181,441.14 and 76,289.81

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Solution

The fourth proportional to 131,484.75, 181,441.14 and 76,289.81 is: 105,275.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,484.75 : 181,441.14 = 76,289.81 : x
  2. Step 2: Convert to fraction form
    131,484.75/181,441.14 = 76,289.81/x
  3. Step 3: Cross multiply
    131,484.75x = 181,441.14 × 76,289.81
  4. Step 4: Simplify right side
    131,484.75x = 13,842,109,288.16
  5. Step 5: Solve for x
    x = 13,842,109,288.16/131,484.75
  6. Step 6: Final answer
    x = 105,275.39

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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.