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Finding the Fourth Proportional to 112,243.78, 154,890.71 and 61,256.08

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Solution

The fourth proportional to 112,243.78, 154,890.71 and 61,256.08 is: 84,530.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,243.78 : 154,890.71 = 61,256.08 : x
  2. Step 2: Convert to fraction form
    112,243.78/154,890.71 = 61,256.08/x
  3. Step 3: Cross multiply
    112,243.78x = 154,890.71 × 61,256.08
  4. Step 4: Simplify right side
    112,243.78x = 9,487,998,184.63
  5. Step 5: Solve for x
    x = 9,487,998,184.63/112,243.78
  6. Step 6: Final answer
    x = 84,530.28

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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.