Home / 101,109.58-151,663.62-78,941.50

Finding the Fourth Proportional to 101,109.58, 151,663.62 and 78,941.50

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Solution

The fourth proportional to 101,109.58, 151,663.62 and 78,941.50 is: 118,411.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,109.58 : 151,663.62 = 78,941.50 : x
  2. Step 2: Convert to fraction form
    101,109.58/151,663.62 = 78,941.50/x
  3. Step 3: Cross multiply
    101,109.58x = 151,663.62 × 78,941.50
  4. Step 4: Simplify right side
    101,109.58x = 11,972,553,658.23
  5. Step 5: Solve for x
    x = 11,972,553,658.23/101,109.58
  6. Step 6: Final answer
    x = 118,411.66

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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.