Home / 105,082.20-145,012.32-57,334.50

Finding the Fourth Proportional to 105,082.20, 145,012.32 and 57,334.50

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Solution

The fourth proportional to 105,082.20, 145,012.32 and 57,334.50 is: 79,121.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,082.20 : 145,012.32 = 57,334.50 : x
  2. Step 2: Convert to fraction form
    105,082.20/145,012.32 = 57,334.50/x
  3. Step 3: Cross multiply
    105,082.20x = 145,012.32 × 57,334.50
  4. Step 4: Simplify right side
    105,082.20x = 8,314,208,861.04
  5. Step 5: Solve for x
    x = 8,314,208,861.04/105,082.20
  6. Step 6: Final answer
    x = 79,121.00

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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.