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Finding the Fourth Proportional to 205,012.32, 307,531.44 and 86,668.08

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Solution

The fourth proportional to 205,012.32, 307,531.44 and 86,668.08 is: 130,007.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,012.32 : 307,531.44 = 86,668.08 : x
  2. Step 2: Convert to fraction form
    205,012.32/307,531.44 = 86,668.08/x
  3. Step 3: Cross multiply
    205,012.32x = 307,531.44 × 86,668.08
  4. Step 4: Simplify right side
    205,012.32x = 26,653,159,444.44
  5. Step 5: Solve for x
    x = 26,653,159,444.44/205,012.32
  6. Step 6: Final answer
    x = 130,007.60

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1.5x scale

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.