Home / 145,749.17-218,129.94-89,624.82

Finding the Fourth Proportional to 145,749.17, 218,129.94 and 89,624.82

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Solution

The fourth proportional to 145,749.17, 218,129.94 and 89,624.82 is: 134,133.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,749.17 : 218,129.94 = 89,624.82 : x
  2. Step 2: Convert to fraction form
    145,749.17/218,129.94 = 89,624.82/x
  3. Step 3: Cross multiply
    145,749.17x = 218,129.94 × 89,624.82
  4. Step 4: Simplify right side
    145,749.17x = 19,549,856,609.11
  5. Step 5: Solve for x
    x = 19,549,856,609.11/145,749.17
  6. Step 6: Final answer
    x = 134,133.58

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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.