Home / 115,678.01-159,634.53-64,690.16

Finding the Fourth Proportional to 115,678.01, 159,634.53 and 64,690.16

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Solution

The fourth proportional to 115,678.01, 159,634.53 and 64,690.16 is: 89,271.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,678.01 : 159,634.53 = 64,690.16 : x
  2. Step 2: Convert to fraction form
    115,678.01/159,634.53 = 64,690.16/x
  3. Step 3: Cross multiply
    115,678.01x = 159,634.53 × 64,690.16
  4. Step 4: Simplify right side
    115,678.01x = 10,326,782,489.05
  5. Step 5: Solve for x
    x = 10,326,782,489.05/115,678.01
  6. Step 6: Final answer
    x = 89,271.79

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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.