Home / 138,688.03-191,390.85-75,027.20

Finding the Fourth Proportional to 138,688.03, 191,390.85 and 75,027.20

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Solution

The fourth proportional to 138,688.03, 191,390.85 and 75,027.20 is: 103,538.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,688.03 : 191,390.85 = 75,027.20 : x
  2. Step 2: Convert to fraction form
    138,688.03/191,390.85 = 75,027.20/x
  3. Step 3: Cross multiply
    138,688.03x = 191,390.85 × 75,027.20
  4. Step 4: Simplify right side
    138,688.03x = 14,359,518,624.17
  5. Step 5: Solve for x
    x = 14,359,518,624.17/138,688.03
  6. Step 6: Final answer
    x = 103,538.27

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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.