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Finding the Fourth Proportional to 92,398.72, 127,394.71 and 77,107.32

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Solution

The fourth proportional to 92,398.72, 127,394.71 and 77,107.32 is: 106,311.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,398.72 : 127,394.71 = 77,107.32 : x
  2. Step 2: Convert to fraction form
    92,398.72/127,394.71 = 77,107.32/x
  3. Step 3: Cross multiply
    92,398.72x = 127,394.71 × 77,107.32
  4. Step 4: Simplify right side
    92,398.72x = 9,823,064,670.28
  5. Step 5: Solve for x
    x = 9,823,064,670.28/92,398.72
  6. Step 6: Final answer
    x = 106,311.70

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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.