Home / 105,610.80-145,729.08-63,153.84

Finding the Fourth Proportional to 105,610.80, 145,729.08 and 63,153.84

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Solution

The fourth proportional to 105,610.80, 145,729.08 and 63,153.84 is: 87,144.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,610.80 : 145,729.08 = 63,153.84 : x
  2. Step 2: Convert to fraction form
    105,610.80/145,729.08 = 63,153.84/x
  3. Step 3: Cross multiply
    105,610.80x = 145,729.08 × 63,153.84
  4. Step 4: Simplify right side
    105,610.80x = 9,203,351,001.67
  5. Step 5: Solve for x
    x = 9,203,351,001.67/105,610.80
  6. Step 6: Final answer
    x = 87,144.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.