Home / 138,750.21-191,475.63-75,088.47

Finding the Fourth Proportional to 138,750.21, 191,475.63 and 75,088.47

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Solution

The fourth proportional to 138,750.21, 191,475.63 and 75,088.47 is: 103,622.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,750.21 : 191,475.63 = 75,088.47 : x
  2. Step 2: Convert to fraction form
    138,750.21/191,475.63 = 75,088.47/x
  3. Step 3: Cross multiply
    138,750.21x = 191,475.63 × 75,088.47
  4. Step 4: Simplify right side
    138,750.21x = 14,377,612,098.99
  5. Step 5: Solve for x
    x = 14,377,612,098.99/138,750.21
  6. Step 6: Final answer
    x = 103,622.27

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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.