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Finding the Fourth Proportional to 162,390.90, 223,895.50 and 124,197.30

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Solution

The fourth proportional to 162,390.90, 223,895.50 and 124,197.30 is: 171,236.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,390.90 : 223,895.50 = 124,197.30 : x
  2. Step 2: Convert to fraction form
    162,390.90/223,895.50 = 124,197.30/x
  3. Step 3: Cross multiply
    162,390.90x = 223,895.50 × 124,197.30
  4. Step 4: Simplify right side
    162,390.90x = 27,807,216,582.15
  5. Step 5: Solve for x
    x = 27,807,216,582.15/162,390.90
  6. Step 6: Final answer
    x = 171,236.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.