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Finding the Fourth Proportional to 169,639.80, 254,459.70 and 98,683.80

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Solution

The fourth proportional to 169,639.80, 254,459.70 and 98,683.80 is: 148,025.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,639.80 : 254,459.70 = 98,683.80 : x
  2. Step 2: Convert to fraction form
    169,639.80/254,459.70 = 98,683.80/x
  3. Step 3: Cross multiply
    169,639.80x = 254,459.70 × 98,683.80
  4. Step 4: Simplify right side
    169,639.80x = 25,111,050,142.86
  5. Step 5: Solve for x
    x = 25,111,050,142.86/169,639.80
  6. Step 6: Final answer
    x = 148,025.70

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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.