Home / 156,986.42-216,636.75-89,009.90

Finding the Fourth Proportional to 156,986.42, 216,636.75 and 89,009.90

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Solution

The fourth proportional to 156,986.42, 216,636.75 and 89,009.90 is: 122,831.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,986.42 : 216,636.75 = 89,009.90 : x
  2. Step 2: Convert to fraction form
    156,986.42/216,636.75 = 89,009.90/x
  3. Step 3: Cross multiply
    156,986.42x = 216,636.75 × 89,009.90
  4. Step 4: Simplify right side
    156,986.42x = 19,282,815,453.83
  5. Step 5: Solve for x
    x = 19,282,815,453.83/156,986.42
  6. Step 6: Final answer
    x = 122,831.11

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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.