Home / 145,749.98-218,131.16-89,625.64

Finding the Fourth Proportional to 145,749.98, 218,131.16 and 89,625.64

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Solution

The fourth proportional to 145,749.98, 218,131.16 and 89,625.64 is: 134,134.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,749.98 : 218,131.16 = 89,625.64 : x
  2. Step 2: Convert to fraction form
    145,749.98/218,131.16 = 89,625.64/x
  3. Step 3: Cross multiply
    145,749.98x = 218,131.16 × 89,625.64
  4. Step 4: Simplify right side
    145,749.98x = 19,550,143,280.16
  5. Step 5: Solve for x
    x = 19,550,143,280.16/145,749.98
  6. Step 6: Final answer
    x = 134,134.79

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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.