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Finding the Fourth Proportional to 85,117.81, 127,676.58 and 84,994.69

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Solution

The fourth proportional to 85,117.81, 127,676.58 and 84,994.69 is: 127,491.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,117.81 : 127,676.58 = 84,994.69 : x
  2. Step 2: Convert to fraction form
    85,117.81/127,676.58 = 84,994.69/x
  3. Step 3: Cross multiply
    85,117.81x = 127,676.58 × 84,994.69
  4. Step 4: Simplify right side
    85,117.81x = 10,851,831,337.36
  5. Step 5: Solve for x
    x = 10,851,831,337.36/85,117.81
  6. Step 6: Final answer
    x = 127,491.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.