Home / 205,326.23-307,985.69-105,427.71

Finding the Fourth Proportional to 205,326.23, 307,985.69 and 105,427.71

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Solution

The fourth proportional to 205,326.23, 307,985.69 and 105,427.71 is: 158,139.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,326.23 : 307,985.69 = 105,427.71 : x
  2. Step 2: Convert to fraction form
    205,326.23/307,985.69 = 105,427.71/x
  3. Step 3: Cross multiply
    205,326.23x = 307,985.69 × 105,427.71
  4. Step 4: Simplify right side
    205,326.23x = 32,470,226,273.04
  5. Step 5: Solve for x
    x = 32,470,226,273.04/205,326.23
  6. Step 6: Final answer
    x = 158,139.69

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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.