Home / 143,840.18-198,494.88-90,154.20

Finding the Fourth Proportional to 143,840.18, 198,494.88 and 90,154.20

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Solution

The fourth proportional to 143,840.18, 198,494.88 and 90,154.20 is: 124,409.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,840.18 : 198,494.88 = 90,154.20 : x
  2. Step 2: Convert to fraction form
    143,840.18/198,494.88 = 90,154.20/x
  3. Step 3: Cross multiply
    143,840.18x = 198,494.88 × 90,154.20
  4. Step 4: Simplify right side
    143,840.18x = 17,895,147,110.50
  5. Step 5: Solve for x
    x = 17,895,147,110.50/143,840.18
  6. Step 6: Final answer
    x = 124,409.93

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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.