Home / 105,500.04-145,589.12-57,101.00

Finding the Fourth Proportional to 105,500.04, 145,589.12 and 57,101.00

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Solution

The fourth proportional to 105,500.04, 145,589.12 and 57,101.00 is: 78,798.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,500.04 : 145,589.12 = 57,101.00 : x
  2. Step 2: Convert to fraction form
    105,500.04/145,589.12 = 57,101.00/x
  3. Step 3: Cross multiply
    105,500.04x = 145,589.12 × 57,101.00
  4. Step 4: Simplify right side
    105,500.04x = 8,313,283,541.80
  5. Step 5: Solve for x
    x = 8,313,283,541.80/105,500.04
  6. Step 6: Final answer
    x = 78,798.87

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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.