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Finding the Fourth Proportional to 104,855.70, 144,695.76 and 57,108.72

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Solution

The fourth proportional to 104,855.70, 144,695.76 and 57,108.72 is: 78,807.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,855.70 : 144,695.76 = 57,108.72 : x
  2. Step 2: Convert to fraction form
    104,855.70/144,695.76 = 57,108.72/x
  3. Step 3: Cross multiply
    104,855.70x = 144,695.76 × 57,108.72
  4. Step 4: Simplify right side
    104,855.70x = 8,263,389,643.03
  5. Step 5: Solve for x
    x = 8,263,389,643.03/104,855.70
  6. Step 6: Final answer
    x = 78,807.25

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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.