Home / 121,035.80-181,553.70-89,931.80

Finding the Fourth Proportional to 121,035.80, 181,553.70 and 89,931.80

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Solution

The fourth proportional to 121,035.80, 181,553.70 and 89,931.80 is: 134,897.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,035.80 : 181,553.70 = 89,931.80 : x
  2. Step 2: Convert to fraction form
    121,035.80/181,553.70 = 89,931.80/x
  3. Step 3: Cross multiply
    121,035.80x = 181,553.70 × 89,931.80
  4. Step 4: Simplify right side
    121,035.80x = 16,327,451,037.66
  5. Step 5: Solve for x
    x = 16,327,451,037.66/121,035.80
  6. Step 6: Final answer
    x = 134,897.70

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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.