Home / 109,719.02-151,411.44-61,981.70

Finding the Fourth Proportional to 109,719.02, 151,411.44 and 61,981.70

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Solution

The fourth proportional to 109,719.02, 151,411.44 and 61,981.70 is: 85,534.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,719.02 : 151,411.44 = 61,981.70 : x
  2. Step 2: Convert to fraction form
    109,719.02/151,411.44 = 61,981.70/x
  3. Step 3: Cross multiply
    109,719.02x = 151,411.44 × 61,981.70
  4. Step 4: Simplify right side
    109,719.02x = 9,384,738,450.65
  5. Step 5: Solve for x
    x = 9,384,738,450.65/109,719.02
  6. Step 6: Final answer
    x = 85,534.29

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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.