Home / 205,534.80-308,302.08-87,123.12

Finding the Fourth Proportional to 205,534.80, 308,302.08 and 87,123.12

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Solution

The fourth proportional to 205,534.80, 308,302.08 and 87,123.12 is: 130,684.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,534.80 : 308,302.08 = 87,123.12 : x
  2. Step 2: Convert to fraction form
    205,534.80/308,302.08 = 87,123.12/x
  3. Step 3: Cross multiply
    205,534.80x = 308,302.08 × 87,123.12
  4. Step 4: Simplify right side
    205,534.80x = 26,860,239,112.09
  5. Step 5: Solve for x
    x = 26,860,239,112.09/205,534.80
  6. Step 6: Final answer
    x = 130,684.63

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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.