Home / 117,707.16-162,441.81-72,387.66

Finding the Fourth Proportional to 117,707.16, 162,441.81 and 72,387.66

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Solution

The fourth proportional to 117,707.16, 162,441.81 and 72,387.66 is: 99,898.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,707.16 : 162,441.81 = 72,387.66 : x
  2. Step 2: Convert to fraction form
    117,707.16/162,441.81 = 72,387.66/x
  3. Step 3: Cross multiply
    117,707.16x = 162,441.81 × 72,387.66
  4. Step 4: Simplify right side
    117,707.16x = 11,758,782,512.06
  5. Step 5: Solve for x
    x = 11,758,782,512.06/117,707.16
  6. Step 6: Final answer
    x = 99,898.62

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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.