Home / 205,721.55-308,607-72,574.35

Finding the Fourth Proportional to 205,721.55, 308,607 and 72,574.35

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Solution

The fourth proportional to 205,721.55, 308,607 and 72,574.35 is: 108,870.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,721.55 : 308,607 = 72,574.35 : x
  2. Step 2: Convert to fraction form
    205,721.55/308,607 = 72,574.35/x
  3. Step 3: Cross multiply
    205,721.55x = 308,607 × 72,574.35
  4. Step 4: Simplify right side
    205,721.55x = 22,396,952,430.45
  5. Step 5: Solve for x
    x = 22,396,952,430.45/205,721.55
  6. Step 6: Final answer
    x = 108,870.23

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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.