Home / 121,153.60-181,760.64-119,144.56

Finding the Fourth Proportional to 121,153.60, 181,760.64 and 119,144.56

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Solution

The fourth proportional to 121,153.60, 181,760.64 and 119,144.56 is: 178,746.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,153.60 : 181,760.64 = 119,144.56 : x
  2. Step 2: Convert to fraction form
    121,153.60/181,760.64 = 119,144.56/x
  3. Step 3: Cross multiply
    121,153.60x = 181,760.64 × 119,144.56
  4. Step 4: Simplify right side
    121,153.60x = 21,655,791,478.12
  5. Step 5: Solve for x
    x = 21,655,791,478.12/121,153.60
  6. Step 6: Final answer
    x = 178,746.58

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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.