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Finding the Fourth Proportional to 112,187, 154,820.96 and 61,200.58

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Solution

The fourth proportional to 112,187, 154,820.96 and 61,200.58 is: 84,458.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,187 : 154,820.96 = 61,200.58 : x
  2. Step 2: Convert to fraction form
    112,187/154,820.96 = 61,200.58/x
  3. Step 3: Cross multiply
    112,187x = 154,820.96 × 61,200.58
  4. Step 4: Simplify right side
    112,187x = 9,475,132,548.16
  5. Step 5: Solve for x
    x = 9,475,132,548.16/112,187
  6. Step 6: Final answer
    x = 84,458.38

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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.