Home / 157,919.36-218,159.19-136,661.72

Finding the Fourth Proportional to 157,919.36, 218,159.19 and 136,661.72

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Solution

The fourth proportional to 157,919.36, 218,159.19 and 136,661.72 is: 188,792.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,919.36 : 218,159.19 = 136,661.72 : x
  2. Step 2: Convert to fraction form
    157,919.36/218,159.19 = 136,661.72/x
  3. Step 3: Cross multiply
    157,919.36x = 218,159.19 × 136,661.72
  4. Step 4: Simplify right side
    157,919.36x = 29,814,009,048.41
  5. Step 5: Solve for x
    x = 29,814,009,048.41/157,919.36
  6. Step 6: Final answer
    x = 188,792.62

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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.