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Finding the Fourth Proportional to 92,979, 139,974.48 and 84,712.14

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Solution

The fourth proportional to 92,979, 139,974.48 and 84,712.14 is: 127,529.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,979 : 139,974.48 = 84,712.14 : x
  2. Step 2: Convert to fraction form
    92,979/139,974.48 = 84,712.14/x
  3. Step 3: Cross multiply
    92,979x = 139,974.48 × 84,712.14
  4. Step 4: Simplify right side
    92,979x = 11,857,537,746.19
  5. Step 5: Solve for x
    x = 11,857,537,746.19/92,979
  6. Step 6: Final answer
    x = 127,529.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.