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Finding the Fourth Proportional to 104,210.70, 143,810.90 and 56,464.04

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Solution

The fourth proportional to 104,210.70, 143,810.90 and 56,464.04 is: 77,920.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,210.70 : 143,810.90 = 56,464.04 : x
  2. Step 2: Convert to fraction form
    104,210.70/143,810.90 = 56,464.04/x
  3. Step 3: Cross multiply
    104,210.70x = 143,810.90 × 56,464.04
  4. Step 4: Simplify right side
    104,210.70x = 8,120,143,408.66
  5. Step 5: Solve for x
    x = 8,120,143,408.66/104,210.70
  6. Step 6: Final answer
    x = 77,920.44

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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.