Home / 121,491.20-181,653.60-89,998.40

Finding the Fourth Proportional to 121,491.20, 181,653.60 and 89,998.40

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Solution

The fourth proportional to 121,491.20, 181,653.60 and 89,998.40 is: 134,565.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,491.20 : 181,653.60 = 89,998.40 : x
  2. Step 2: Convert to fraction form
    121,491.20/181,653.60 = 89,998.40/x
  3. Step 3: Cross multiply
    121,491.20x = 181,653.60 × 89,998.40
  4. Step 4: Simplify right side
    121,491.20x = 16,348,533,354.24
  5. Step 5: Solve for x
    x = 16,348,533,354.24/121,491.20
  6. Step 6: Final answer
    x = 134,565.58

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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.