Home / 131,615.69-181,617.53-80,605.13

Finding the Fourth Proportional to 131,615.69, 181,617.53 and 80,605.13

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Solution

The fourth proportional to 131,615.69, 181,617.53 and 80,605.13 is: 111,227.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,615.69 : 181,617.53 = 80,605.13 : x
  2. Step 2: Convert to fraction form
    131,615.69/181,617.53 = 80,605.13/x
  3. Step 3: Cross multiply
    131,615.69x = 181,617.53 × 80,605.13
  4. Step 4: Simplify right side
    131,615.69x = 14,639,303,304.82
  5. Step 5: Solve for x
    x = 14,639,303,304.82/131,615.69
  6. Step 6: Final answer
    x = 111,227.65

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1.5x scale

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.