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Finding the Fourth Proportional to 136,688.40, 205,032.60 and 111,756.60

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Solution

The fourth proportional to 136,688.40, 205,032.60 and 111,756.60 is: 167,634.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,688.40 : 205,032.60 = 111,756.60 : x
  2. Step 2: Convert to fraction form
    136,688.40/205,032.60 = 111,756.60/x
  3. Step 3: Cross multiply
    136,688.40x = 205,032.60 × 111,756.60
  4. Step 4: Simplify right side
    136,688.40x = 22,913,746,265.16
  5. Step 5: Solve for x
    x = 22,913,746,265.16/136,688.40
  6. Step 6: Final answer
    x = 167,634.90

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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.