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Finding the Fourth Proportional to 112,169.25, 154,804.50 and 61,868.25

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Solution

The fourth proportional to 112,169.25, 154,804.50 and 61,868.25 is: 85,384.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,169.25 : 154,804.50 = 61,868.25 : x
  2. Step 2: Convert to fraction form
    112,169.25/154,804.50 = 61,868.25/x
  3. Step 3: Cross multiply
    112,169.25x = 154,804.50 × 61,868.25
  4. Step 4: Simplify right side
    112,169.25x = 9,577,483,507.13
  5. Step 5: Solve for x
    x = 9,577,483,507.13/112,169.25
  6. Step 6: Final answer
    x = 85,384.22

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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.