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Finding the Fourth Proportional to 117,323.87, 161,820.90 and 77,022.92

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Solution

The fourth proportional to 117,323.87, 161,820.90 and 77,022.92 is: 106,235.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,323.87 : 161,820.90 = 77,022.92 : x
  2. Step 2: Convert to fraction form
    117,323.87/161,820.90 = 77,022.92/x
  3. Step 3: Cross multiply
    117,323.87x = 161,820.90 × 77,022.92
  4. Step 4: Simplify right side
    117,323.87x = 12,463,918,639.58
  5. Step 5: Solve for x
    x = 12,463,918,639.58/117,323.87
  6. Step 6: Final answer
    x = 106,235.15

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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.