Home / 157,979.04-218,050.25-90,036.31

Finding the Fourth Proportional to 157,979.04, 218,050.25 and 90,036.31

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Solution

The fourth proportional to 157,979.04, 218,050.25 and 90,036.31 is: 124,272.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,979.04 : 218,050.25 = 90,036.31 : x
  2. Step 2: Convert to fraction form
    157,979.04/218,050.25 = 90,036.31/x
  3. Step 3: Cross multiply
    157,979.04x = 218,050.25 × 90,036.31
  4. Step 4: Simplify right side
    157,979.04x = 19,632,439,904.58
  5. Step 5: Solve for x
    x = 19,632,439,904.58/157,979.04
  6. Step 6: Final answer
    x = 124,272.43

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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.