Home / 223,965.80-309,068.16-121,992.40

Finding the Fourth Proportional to 223,965.80, 309,068.16 and 121,992.40

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Solution

The fourth proportional to 223,965.80, 309,068.16 and 121,992.40 is: 168,346.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,965.80 : 309,068.16 = 121,992.40 : x
  2. Step 2: Convert to fraction form
    223,965.80/309,068.16 = 121,992.40/x
  3. Step 3: Cross multiply
    223,965.80x = 309,068.16 × 121,992.40
  4. Step 4: Simplify right side
    223,965.80x = 37,703,966,601.98
  5. Step 5: Solve for x
    x = 37,703,966,601.98/223,965.80
  6. Step 6: Final answer
    x = 168,346.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.