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Finding the Fourth Proportional to 101,157.79, 139,576.91 and 58,128.97

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Solution

The fourth proportional to 101,157.79, 139,576.91 and 58,128.97 is: 80,206.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,157.79 : 139,576.91 = 58,128.97 : x
  2. Step 2: Convert to fraction form
    101,157.79/139,576.91 = 58,128.97/x
  3. Step 3: Cross multiply
    101,157.79x = 139,576.91 × 58,128.97
  4. Step 4: Simplify right side
    101,157.79x = 8,113,462,014.08
  5. Step 5: Solve for x
    x = 8,113,462,014.08/101,157.79
  6. Step 6: Final answer
    x = 80,206.00

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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.