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Finding the Fourth Proportional to 93,126.82, 138,908.77 and 85,484.74

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Solution

The fourth proportional to 93,126.82, 138,908.77 and 85,484.74 is: 127,509.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,126.82 : 138,908.77 = 85,484.74 : x
  2. Step 2: Convert to fraction form
    93,126.82/138,908.77 = 85,484.74/x
  3. Step 3: Cross multiply
    93,126.82x = 138,908.77 × 85,484.74
  4. Step 4: Simplify right side
    93,126.82x = 11,874,580,087.17
  5. Step 5: Solve for x
    x = 11,874,580,087.17/93,126.82
  6. Step 6: Final answer
    x = 127,509.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.