Home / 163,669.40-245,504.10-138,008.60

Finding the Fourth Proportional to 163,669.40, 245,504.10 and 138,008.60

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Solution

The fourth proportional to 163,669.40, 245,504.10 and 138,008.60 is: 207,012.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,669.40 : 245,504.10 = 138,008.60 : x
  2. Step 2: Convert to fraction form
    163,669.40/245,504.10 = 138,008.60/x
  3. Step 3: Cross multiply
    163,669.40x = 245,504.10 × 138,008.60
  4. Step 4: Simplify right side
    163,669.40x = 33,881,677,135.26
  5. Step 5: Solve for x
    x = 33,881,677,135.26/163,669.40
  6. Step 6: Final answer
    x = 207,012.90

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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.