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Finding the Fourth Proportional to 99,155.40, 148,733.40 and 69,705

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Solution

The fourth proportional to 99,155.40, 148,733.40 and 69,705 is: 104,557.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,155.40 : 148,733.40 = 69,705 : x
  2. Step 2: Convert to fraction form
    99,155.40/148,733.40 = 69,705/x
  3. Step 3: Cross multiply
    99,155.40x = 148,733.40 × 69,705
  4. Step 4: Simplify right side
    99,155.40x = 10,367,461,647
  5. Step 5: Solve for x
    x = 10,367,461,647/99,155.40
  6. Step 6: Final answer
    x = 104,557.71

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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.