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Finding the Fourth Proportional to 162,648.70, 243,973.05 and 121,176.70

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Solution

The fourth proportional to 162,648.70, 243,973.05 and 121,176.70 is: 181,765.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,648.70 : 243,973.05 = 121,176.70 : x
  2. Step 2: Convert to fraction form
    162,648.70/243,973.05 = 121,176.70/x
  3. Step 3: Cross multiply
    162,648.70x = 243,973.05 × 121,176.70
  4. Step 4: Simplify right side
    162,648.70x = 29,563,849,087.94
  5. Step 5: Solve for x
    x = 29,563,849,087.94/162,648.70
  6. Step 6: Final answer
    x = 181,765.05

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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.