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Finding the Fourth Proportional to 112,655.66, 155,464.04 and 64,907.98

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Solution

The fourth proportional to 112,655.66, 155,464.04 and 64,907.98 is: 89,572.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,655.66 : 155,464.04 = 64,907.98 : x
  2. Step 2: Convert to fraction form
    112,655.66/155,464.04 = 64,907.98/x
  3. Step 3: Cross multiply
    112,655.66x = 155,464.04 × 64,907.98
  4. Step 4: Simplify right side
    112,655.66x = 10,090,856,799.04
  5. Step 5: Solve for x
    x = 10,090,856,799.04/112,655.66
  6. Step 6: Final answer
    x = 89,572.57

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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.