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Finding the Fourth Proportional to 117,683.87, 162,402.48 and 87,603.71

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Solution

The fourth proportional to 117,683.87, 162,402.48 and 87,603.71 is: 120,892.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,683.87 : 162,402.48 = 87,603.71 : x
  2. Step 2: Convert to fraction form
    117,683.87/162,402.48 = 87,603.71/x
  3. Step 3: Cross multiply
    117,683.87x = 162,402.48 × 87,603.71
  4. Step 4: Simplify right side
    117,683.87x = 14,227,058,949.19
  5. Step 5: Solve for x
    x = 14,227,058,949.19/117,683.87
  6. Step 6: Final answer
    x = 120,892.18

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1.5x scale

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.