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Finding the Fourth Proportional to 216,683.10, 325,117.70 and 83,656.79

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Solution

The fourth proportional to 216,683.10, 325,117.70 and 83,656.79 is: 125,521.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,683.10 : 325,117.70 = 83,656.79 : x
  2. Step 2: Convert to fraction form
    216,683.10/325,117.70 = 83,656.79/x
  3. Step 3: Cross multiply
    216,683.10x = 325,117.70 × 83,656.79
  4. Step 4: Simplify right side
    216,683.10x = 27,198,303,154.18
  5. Step 5: Solve for x
    x = 27,198,303,154.18/216,683.10
  6. Step 6: Final answer
    x = 125,521.11

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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.