Home / 158,588-218,831.32-86,949.18

Finding the Fourth Proportional to 158,588, 218,831.32 and 86,949.18

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Solution

The fourth proportional to 158,588, 218,831.32 and 86,949.18 is: 119,978.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,588 : 218,831.32 = 86,949.18 : x
  2. Step 2: Convert to fraction form
    158,588/218,831.32 = 86,949.18/x
  3. Step 3: Cross multiply
    158,588x = 218,831.32 × 86,949.18
  4. Step 4: Simplify right side
    158,588x = 19,027,203,832.32
  5. Step 5: Solve for x
    x = 19,027,203,832.32/158,588
  6. Step 6: Final answer
    x = 119,978.84

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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.