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Finding the Fourth Proportional to 104,643.28, 144,462.90 and 84,000.70

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Solution

The fourth proportional to 104,643.28, 144,462.90 and 84,000.70 is: 115,965.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,643.28 : 144,462.90 = 84,000.70 : x
  2. Step 2: Convert to fraction form
    104,643.28/144,462.90 = 84,000.70/x
  3. Step 3: Cross multiply
    104,643.28x = 144,462.90 × 84,000.70
  4. Step 4: Simplify right side
    104,643.28x = 12,134,984,724.03
  5. Step 5: Solve for x
    x = 12,134,984,724.03/104,643.28
  6. Step 6: Final answer
    x = 115,965.26

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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.