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Finding the Fourth Proportional to 105,270.80, 157,675.80 and 91,446.80

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Solution

The fourth proportional to 105,270.80, 157,675.80 and 91,446.80 is: 136,970.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,270.80 : 157,675.80 = 91,446.80 : x
  2. Step 2: Convert to fraction form
    105,270.80/157,675.80 = 91,446.80/x
  3. Step 3: Cross multiply
    105,270.80x = 157,675.80 × 91,446.80
  4. Step 4: Simplify right side
    105,270.80x = 14,418,947,347.44
  5. Step 5: Solve for x
    x = 14,418,947,347.44/105,270.80
  6. Step 6: Final answer
    x = 136,970.06

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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.