Home / 163,619.40-245,429.10-145,248.60

Finding the Fourth Proportional to 163,619.40, 245,429.10 and 145,248.60

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Solution

The fourth proportional to 163,619.40, 245,429.10 and 145,248.60 is: 217,872.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,619.40 : 245,429.10 = 145,248.60 : x
  2. Step 2: Convert to fraction form
    163,619.40/245,429.10 = 145,248.60/x
  3. Step 3: Cross multiply
    163,619.40x = 245,429.10 × 145,248.60
  4. Step 4: Simplify right side
    163,619.40x = 35,648,233,174.26
  5. Step 5: Solve for x
    x = 35,648,233,174.26/163,619.40
  6. Step 6: Final answer
    x = 217,872.90

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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.