Home / 143,417.21-215,125.56-68,309.55

Finding the Fourth Proportional to 143,417.21, 215,125.56 and 68,309.55

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Solution

The fourth proportional to 143,417.21, 215,125.56 and 68,309.55 is: 102,464.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,417.21 : 215,125.56 = 68,309.55 : x
  2. Step 2: Convert to fraction form
    143,417.21/215,125.56 = 68,309.55/x
  3. Step 3: Cross multiply
    143,417.21x = 215,125.56 × 68,309.55
  4. Step 4: Simplify right side
    143,417.21x = 14,695,130,197.10
  5. Step 5: Solve for x
    x = 14,695,130,197.10/143,417.21
  6. Step 6: Final answer
    x = 102,464.21

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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.