Home / 100,746.60-151,218.93-76,831.76

Finding the Fourth Proportional to 100,746.60, 151,218.93 and 76,831.76

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Solution

The fourth proportional to 100,746.60, 151,218.93 and 76,831.76 is: 115,323.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,746.60 : 151,218.93 = 76,831.76 : x
  2. Step 2: Convert to fraction form
    100,746.60/151,218.93 = 76,831.76/x
  3. Step 3: Cross multiply
    100,746.60x = 151,218.93 × 76,831.76
  4. Step 4: Simplify right side
    100,746.60x = 11,618,415,781.12
  5. Step 5: Solve for x
    x = 11,618,415,781.12/100,746.60
  6. Step 6: Final answer
    x = 115,323.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.