Home / 90,921-136,386.36-28,596.36

Finding the Fourth Proportional to 90,921, 136,386.36 and 28,596.36

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Solution

The fourth proportional to 90,921, 136,386.36 and 28,596.36 is: 42,896.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,921 : 136,386.36 = 28,596.36 : x
  2. Step 2: Convert to fraction form
    90,921/136,386.36 = 28,596.36/x
  3. Step 3: Cross multiply
    90,921x = 136,386.36 × 28,596.36
  4. Step 4: Simplify right side
    90,921x = 3,900,153,449.65
  5. Step 5: Solve for x
    x = 3,900,153,449.65/90,921
  6. Step 6: Final answer
    x = 42,896.07

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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.