Home / 145,065.36-217,665-66,203.76

Finding the Fourth Proportional to 145,065.36, 217,665 and 66,203.76

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Solution

The fourth proportional to 145,065.36, 217,665 and 66,203.76 is: 99,336.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,065.36 : 217,665 = 66,203.76 : x
  2. Step 2: Convert to fraction form
    145,065.36/217,665 = 66,203.76/x
  3. Step 3: Cross multiply
    145,065.36x = 217,665 × 66,203.76
  4. Step 4: Simplify right side
    145,065.36x = 14,410,241,420.40
  5. Step 5: Solve for x
    x = 14,410,241,420.40/145,065.36
  6. Step 6: Final answer
    x = 99,336.20

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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.