Home / 93,287.18-128,816.79-79,990.22

Finding the Fourth Proportional to 93,287.18, 128,816.79 and 79,990.22

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Solution

The fourth proportional to 93,287.18, 128,816.79 and 79,990.22 is: 110,455.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,287.18 : 128,816.79 = 79,990.22 : x
  2. Step 2: Convert to fraction form
    93,287.18/128,816.79 = 79,990.22/x
  3. Step 3: Cross multiply
    93,287.18x = 128,816.79 × 79,990.22
  4. Step 4: Simplify right side
    93,287.18x = 10,304,083,371.79
  5. Step 5: Solve for x
    x = 10,304,083,371.79/93,287.18
  6. Step 6: Final answer
    x = 110,455.51

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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.