Home / 163,933.80-245,747.10-128,375.40

Finding the Fourth Proportional to 163,933.80, 245,747.10 and 128,375.40

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Solution

The fourth proportional to 163,933.80, 245,747.10 and 128,375.40 is: 192,442.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,933.80 : 245,747.10 = 128,375.40 : x
  2. Step 2: Convert to fraction form
    163,933.80/245,747.10 = 128,375.40/x
  3. Step 3: Cross multiply
    163,933.80x = 245,747.10 × 128,375.40
  4. Step 4: Simplify right side
    163,933.80x = 31,547,882,261.34
  5. Step 5: Solve for x
    x = 31,547,882,261.34/163,933.80
  6. Step 6: Final answer
    x = 192,442.82

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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.