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Finding the Fourth Proportional to 143,443.70, 215,165.55 and 103,814.90

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Solution

The fourth proportional to 143,443.70, 215,165.55 and 103,814.90 is: 155,722.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,443.70 : 215,165.55 = 103,814.90 : x
  2. Step 2: Convert to fraction form
    143,443.70/215,165.55 = 103,814.90/x
  3. Step 3: Cross multiply
    143,443.70x = 215,165.55 × 103,814.90
  4. Step 4: Simplify right side
    143,443.70x = 22,337,390,056.70
  5. Step 5: Solve for x
    x = 22,337,390,056.70/143,443.70
  6. Step 6: Final answer
    x = 155,722.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.