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Finding the Fourth Proportional to 131,030.94, 180,846.70 and 85,749.11

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Solution

The fourth proportional to 131,030.94, 180,846.70 and 85,749.11 is: 118,349.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,030.94 : 180,846.70 = 85,749.11 : x
  2. Step 2: Convert to fraction form
    131,030.94/180,846.70 = 85,749.11/x
  3. Step 3: Cross multiply
    131,030.94x = 180,846.70 × 85,749.11
  4. Step 4: Simplify right side
    131,030.94x = 15,507,443,571.44
  5. Step 5: Solve for x
    x = 15,507,443,571.44/131,030.94
  6. Step 6: Final answer
    x = 118,349.48

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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.