Home / 143,840.68-198,495.57-90,154.69

Finding the Fourth Proportional to 143,840.68, 198,495.57 and 90,154.69

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Solution

The fourth proportional to 143,840.68, 198,495.57 and 90,154.69 is: 124,410.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,840.68 : 198,495.57 = 90,154.69 : x
  2. Step 2: Convert to fraction form
    143,840.68/198,495.57 = 90,154.69/x
  3. Step 3: Cross multiply
    143,840.68x = 198,495.57 × 90,154.69
  4. Step 4: Simplify right side
    143,840.68x = 17,895,306,579.72
  5. Step 5: Solve for x
    x = 17,895,306,579.72/143,840.68
  6. Step 6: Final answer
    x = 124,410.61

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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.