Home / 90,805.40-136,208.10-57,672.35

Finding the Fourth Proportional to 90,805.40, 136,208.10 and 57,672.35

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Solution

The fourth proportional to 90,805.40, 136,208.10 and 57,672.35 is: 86,508.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,805.40 : 136,208.10 = 57,672.35 : x
  2. Step 2: Convert to fraction form
    90,805.40/136,208.10 = 57,672.35/x
  3. Step 3: Cross multiply
    90,805.40x = 136,208.10 × 57,672.35
  4. Step 4: Simplify right side
    90,805.40x = 7,855,441,216.04
  5. Step 5: Solve for x
    x = 7,855,441,216.04/90,805.40
  6. Step 6: Final answer
    x = 86,508.53

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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.