Home / 90,649.41-136,203.75-57,385.14

Finding the Fourth Proportional to 90,649.41, 136,203.75 and 57,385.14

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Solution

The fourth proportional to 90,649.41, 136,203.75 and 57,385.14 is: 86,223.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,649.41 : 136,203.75 = 57,385.14 : x
  2. Step 2: Convert to fraction form
    90,649.41/136,203.75 = 57,385.14/x
  3. Step 3: Cross multiply
    90,649.41x = 136,203.75 × 57,385.14
  4. Step 4: Simplify right side
    90,649.41x = 7,816,071,262.28
  5. Step 5: Solve for x
    x = 7,816,071,262.28/90,649.41
  6. Step 6: Final answer
    x = 86,223.08

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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.