Home / 116,688.80-174,990-91,777.28

Finding the Fourth Proportional to 116,688.80, 174,990 and 91,777.28

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Solution

The fourth proportional to 116,688.80, 174,990 and 91,777.28 is: 137,631.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,688.80 : 174,990 = 91,777.28 : x
  2. Step 2: Convert to fraction form
    116,688.80/174,990 = 91,777.28/x
  3. Step 3: Cross multiply
    116,688.80x = 174,990 × 91,777.28
  4. Step 4: Simplify right side
    116,688.80x = 16,060,106,227.20
  5. Step 5: Solve for x
    x = 16,060,106,227.20/116,688.80
  6. Step 6: Final answer
    x = 137,631.94

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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.