Home / 143,611.50-198,054.84-89,901.40

Finding the Fourth Proportional to 143,611.50, 198,054.84 and 89,901.40

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Solution

The fourth proportional to 143,611.50, 198,054.84 and 89,901.40 is: 123,983.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,611.50 : 198,054.84 = 89,901.40 : x
  2. Step 2: Convert to fraction form
    143,611.50/198,054.84 = 89,901.40/x
  3. Step 3: Cross multiply
    143,611.50x = 198,054.84 × 89,901.40
  4. Step 4: Simplify right side
    143,611.50x = 17,805,407,392.78
  5. Step 5: Solve for x
    x = 17,805,407,392.78/143,611.50
  6. Step 6: Final answer
    x = 123,983.16

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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.