Home / 143,842.20-198,497.64-90,156.20

Finding the Fourth Proportional to 143,842.20, 198,497.64 and 90,156.20

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Solution

The fourth proportional to 143,842.20, 198,497.64 and 90,156.20 is: 124,412.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,842.20 : 198,497.64 = 90,156.20 : x
  2. Step 2: Convert to fraction form
    143,842.20/198,497.64 = 90,156.20/x
  3. Step 3: Cross multiply
    143,842.20x = 198,497.64 × 90,156.20
  4. Step 4: Simplify right side
    143,842.20x = 17,895,792,931.37
  5. Step 5: Solve for x
    x = 17,895,792,931.37/143,842.20
  6. Step 6: Final answer
    x = 124,412.68

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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.