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Finding the Fourth Proportional to 103,731.60, 144,913.20 and 103,731.60

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Solution

The fourth proportional to 103,731.60, 144,913.20 and 103,731.60 is: 144,913.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,731.60 : 144,913.20 = 103,731.60 : x
  2. Step 2: Convert to fraction form
    103,731.60/144,913.20 = 103,731.60/x
  3. Step 3: Cross multiply
    103,731.60x = 144,913.20 × 103,731.60
  4. Step 4: Simplify right side
    103,731.60x = 15,032,078,097.12
  5. Step 5: Solve for x
    x = 15,032,078,097.12/103,731.60
  6. Step 6: Final answer
    x = 144,913.20

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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.