Home / 163,979.70-245,969.55-89,135.70

Finding the Fourth Proportional to 163,979.70, 245,969.55 and 89,135.70

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Solution

The fourth proportional to 163,979.70, 245,969.55 and 89,135.70 is: 133,703.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,979.70 : 245,969.55 = 89,135.70 : x
  2. Step 2: Convert to fraction form
    163,979.70/245,969.55 = 89,135.70/x
  3. Step 3: Cross multiply
    163,979.70x = 245,969.55 × 89,135.70
  4. Step 4: Simplify right side
    163,979.70x = 21,924,668,017.94
  5. Step 5: Solve for x
    x = 21,924,668,017.94/163,979.70
  6. Step 6: Final answer
    x = 133,703.55

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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.