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Finding the Fourth Proportional to 102,894.30, 154,341.45 and 91,740.60

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Solution

The fourth proportional to 102,894.30, 154,341.45 and 91,740.60 is: 137,610.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,894.30 : 154,341.45 = 91,740.60 : x
  2. Step 2: Convert to fraction form
    102,894.30/154,341.45 = 91,740.60/x
  3. Step 3: Cross multiply
    102,894.30x = 154,341.45 × 91,740.60
  4. Step 4: Simplify right side
    102,894.30x = 14,159,377,227.87
  5. Step 5: Solve for x
    x = 14,159,377,227.87/102,894.30
  6. Step 6: Final answer
    x = 137,610.90

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1.5x scale

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.