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Finding the Fourth Proportional to 115,804.95, 159,813.66 and 64,817.25

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Solution

The fourth proportional to 115,804.95, 159,813.66 and 64,817.25 is: 89,449.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,804.95 : 159,813.66 = 64,817.25 : x
  2. Step 2: Convert to fraction form
    115,804.95/159,813.66 = 64,817.25/x
  3. Step 3: Cross multiply
    115,804.95x = 159,813.66 × 64,817.25
  4. Step 4: Simplify right side
    115,804.95x = 10,358,681,953.64
  5. Step 5: Solve for x
    x = 10,358,681,953.64/115,804.95
  6. Step 6: Final answer
    x = 89,449.39

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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.