Home / 105,233.45-145,220.33-57,485.57

Finding the Fourth Proportional to 105,233.45, 145,220.33 and 57,485.57

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Solution

The fourth proportional to 105,233.45, 145,220.33 and 57,485.57 is: 79,329.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,233.45 : 145,220.33 = 57,485.57 : x
  2. Step 2: Convert to fraction form
    105,233.45/145,220.33 = 57,485.57/x
  3. Step 3: Cross multiply
    105,233.45x = 145,220.33 × 57,485.57
  4. Step 4: Simplify right side
    105,233.45x = 8,348,073,445.64
  5. Step 5: Solve for x
    x = 8,348,073,445.64/105,233.45
  6. Step 6: Final answer
    x = 79,329.09

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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.