Home / 102,355.45-153,346.11-74,205.70

Finding the Fourth Proportional to 102,355.45, 153,346.11 and 74,205.70

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Solution

The fourth proportional to 102,355.45, 153,346.11 and 74,205.70 is: 111,172.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,355.45 : 153,346.11 = 74,205.70 : x
  2. Step 2: Convert to fraction form
    102,355.45/153,346.11 = 74,205.70/x
  3. Step 3: Cross multiply
    102,355.45x = 153,346.11 × 74,205.70
  4. Step 4: Simplify right side
    102,355.45x = 11,379,155,434.83
  5. Step 5: Solve for x
    x = 11,379,155,434.83/102,355.45
  6. Step 6: Final answer
    x = 111,172.93

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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.