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Finding the Fourth Proportional to 101,555.91, 152,354.36 and 69,981.10

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Solution

The fourth proportional to 101,555.91, 152,354.36 and 69,981.10 is: 104,985.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,555.91 : 152,354.36 = 69,981.10 : x
  2. Step 2: Convert to fraction form
    101,555.91/152,354.36 = 69,981.10/x
  3. Step 3: Cross multiply
    101,555.91x = 152,354.36 × 69,981.10
  4. Step 4: Simplify right side
    101,555.91x = 10,661,925,496.66
  5. Step 5: Solve for x
    x = 10,661,925,496.66/101,555.91
  6. Step 6: Final answer
    x = 104,985.77

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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.