Home / 105,542.18-145,643.83-57,794.70

Finding the Fourth Proportional to 105,542.18, 145,643.83 and 57,794.70

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Solution

The fourth proportional to 105,542.18, 145,643.83 and 57,794.70 is: 79,754.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,542.18 : 145,643.83 = 57,794.70 : x
  2. Step 2: Convert to fraction form
    105,542.18/145,643.83 = 57,794.70/x
  3. Step 3: Cross multiply
    105,542.18x = 145,643.83 × 57,794.70
  4. Step 4: Simplify right side
    105,542.18x = 8,417,441,461.70
  5. Step 5: Solve for x
    x = 8,417,441,461.70/105,542.18
  6. Step 6: Final answer
    x = 79,754.29

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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.