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Finding the Fourth Proportional to 121,154.60, 181,762.14 and 119,145.56

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Solution

The fourth proportional to 121,154.60, 181,762.14 and 119,145.56 is: 178,748.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,154.60 : 181,762.14 = 119,145.56 : x
  2. Step 2: Convert to fraction form
    121,154.60/181,762.14 = 119,145.56/x
  3. Step 3: Cross multiply
    121,154.60x = 181,762.14 × 119,145.56
  4. Step 4: Simplify right side
    121,154.60x = 21,656,151,957.10
  5. Step 5: Solve for x
    x = 21,656,151,957.10/121,154.60
  6. Step 6: Final answer
    x = 178,748.08

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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.