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Finding the Fourth Proportional to 115,860.94, 159,850.95 and 64,866.19

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Solution

The fourth proportional to 115,860.94, 159,850.95 and 64,866.19 is: 89,494.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,860.94 : 159,850.95 = 64,866.19 : x
  2. Step 2: Convert to fraction form
    115,860.94/159,850.95 = 64,866.19/x
  3. Step 3: Cross multiply
    115,860.94x = 159,850.95 × 64,866.19
  4. Step 4: Simplify right side
    115,860.94x = 10,368,922,094.38
  5. Step 5: Solve for x
    x = 10,368,922,094.38/115,860.94
  6. Step 6: Final answer
    x = 89,494.54

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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.