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Finding the Fourth Proportional to 101,932.60, 152,801.70 and 79,430.80

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Solution

The fourth proportional to 101,932.60, 152,801.70 and 79,430.80 is: 119,070.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,932.60 : 152,801.70 = 79,430.80 : x
  2. Step 2: Convert to fraction form
    101,932.60/152,801.70 = 79,430.80/x
  3. Step 3: Cross multiply
    101,932.60x = 152,801.70 × 79,430.80
  4. Step 4: Simplify right side
    101,932.60x = 12,137,161,272.36
  5. Step 5: Solve for x
    x = 12,137,161,272.36/101,932.60
  6. Step 6: Final answer
    x = 119,070.46

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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.