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Finding the Fourth Proportional to 112,897.64, 155,798.70 and 61,214.78

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Solution

The fourth proportional to 112,897.64, 155,798.70 and 61,214.78 is: 84,476.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,897.64 : 155,798.70 = 61,214.78 : x
  2. Step 2: Convert to fraction form
    112,897.64/155,798.70 = 61,214.78/x
  3. Step 3: Cross multiply
    112,897.64x = 155,798.70 × 61,214.78
  4. Step 4: Simplify right side
    112,897.64x = 9,537,183,144.79
  5. Step 5: Solve for x
    x = 9,537,183,144.79/112,897.64
  6. Step 6: Final answer
    x = 84,476.37

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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.