Home / 115,739.57-159,719.81-64,752.10

Finding the Fourth Proportional to 115,739.57, 159,719.81 and 64,752.10

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Solution

The fourth proportional to 115,739.57, 159,719.81 and 64,752.10 is: 89,357.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,739.57 : 159,719.81 = 64,752.10 : x
  2. Step 2: Convert to fraction form
    115,739.57/159,719.81 = 64,752.10/x
  3. Step 3: Cross multiply
    115,739.57x = 159,719.81 × 64,752.10
  4. Step 4: Simplify right side
    115,739.57x = 10,342,192,386.04
  5. Step 5: Solve for x
    x = 10,342,192,386.04/115,739.57
  6. Step 6: Final answer
    x = 89,357.44

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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.