Home / 143,728.64-215,513.58-66,707.66

Finding the Fourth Proportional to 143,728.64, 215,513.58 and 66,707.66

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Solution

The fourth proportional to 143,728.64, 215,513.58 and 66,707.66 is: 100,024.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,728.64 : 215,513.58 = 66,707.66 : x
  2. Step 2: Convert to fraction form
    143,728.64/215,513.58 = 66,707.66/x
  3. Step 3: Cross multiply
    143,728.64x = 215,513.58 × 66,707.66
  4. Step 4: Simplify right side
    143,728.64x = 14,376,406,620.02
  5. Step 5: Solve for x
    x = 14,376,406,620.02/143,728.64
  6. Step 6: Final answer
    x = 100,024.65

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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.