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Finding the Fourth Proportional to 162,465.70, 243,791.70 and 87,585.52

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Solution

The fourth proportional to 162,465.70, 243,791.70 and 87,585.52 is: 131,428.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,465.70 : 243,791.70 = 87,585.52 : x
  2. Step 2: Convert to fraction form
    162,465.70/243,791.70 = 87,585.52/x
  3. Step 3: Cross multiply
    162,465.70x = 243,791.70 × 87,585.52
  4. Step 4: Simplify right side
    162,465.70x = 21,352,622,816.18
  5. Step 5: Solve for x
    x = 21,352,622,816.18/162,465.70
  6. Step 6: Final answer
    x = 131,428.50

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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.