Home / 115,937.87-159,914.23-81,555.50

Finding the Fourth Proportional to 115,937.87, 159,914.23 and 81,555.50

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Solution

The fourth proportional to 115,937.87, 159,914.23 and 81,555.50 is: 112,490.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,937.87 : 159,914.23 = 81,555.50 : x
  2. Step 2: Convert to fraction form
    115,937.87/159,914.23 = 81,555.50/x
  3. Step 3: Cross multiply
    115,937.87x = 159,914.23 × 81,555.50
  4. Step 4: Simplify right side
    115,937.87x = 13,041,884,682.93
  5. Step 5: Solve for x
    x = 13,041,884,682.93/115,937.87
  6. Step 6: Final answer
    x = 112,490.29

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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.