Home / 121,438.20-181,865.70-98,110.20

Finding the Fourth Proportional to 121,438.20, 181,865.70 and 98,110.20

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Solution

The fourth proportional to 121,438.20, 181,865.70 and 98,110.20 is: 146,929.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,438.20 : 181,865.70 = 98,110.20 : x
  2. Step 2: Convert to fraction form
    121,438.20/181,865.70 = 98,110.20/x
  3. Step 3: Cross multiply
    121,438.20x = 181,865.70 × 98,110.20
  4. Step 4: Simplify right side
    121,438.20x = 17,842,880,200.14
  5. Step 5: Solve for x
    x = 17,842,880,200.14/121,438.20
  6. Step 6: Final answer
    x = 146,929.72

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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.