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Finding the Fourth Proportional to 102,989.40, 144,496.20 and 102,989.40

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Solution

The fourth proportional to 102,989.40, 144,496.20 and 102,989.40 is: 144,496.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,989.40 : 144,496.20 = 102,989.40 : x
  2. Step 2: Convert to fraction form
    102,989.40/144,496.20 = 102,989.40/x
  3. Step 3: Cross multiply
    102,989.40x = 144,496.20 × 102,989.40
  4. Step 4: Simplify right side
    102,989.40x = 14,881,576,940.28
  5. Step 5: Solve for x
    x = 14,881,576,940.28/102,989.40
  6. Step 6: Final answer
    x = 144,496.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.