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Finding the Fourth Proportional to 169,530.40, 254,295.60 and 139,981.60

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Solution

The fourth proportional to 169,530.40, 254,295.60 and 139,981.60 is: 209,972.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,530.40 : 254,295.60 = 139,981.60 : x
  2. Step 2: Convert to fraction form
    169,530.40/254,295.60 = 139,981.60/x
  3. Step 3: Cross multiply
    169,530.40x = 254,295.60 × 139,981.60
  4. Step 4: Simplify right side
    169,530.40x = 35,596,704,960.96
  5. Step 5: Solve for x
    x = 35,596,704,960.96/169,530.40
  6. Step 6: Final answer
    x = 209,972.40

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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.