Home / 100,731.40-138,954.08-62,477.73

Finding the Fourth Proportional to 100,731.40, 138,954.08 and 62,477.73

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Solution

The fourth proportional to 100,731.40, 138,954.08 and 62,477.73 is: 86,185.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,731.40 : 138,954.08 = 62,477.73 : x
  2. Step 2: Convert to fraction form
    100,731.40/138,954.08 = 62,477.73/x
  3. Step 3: Cross multiply
    100,731.40x = 138,954.08 × 62,477.73
  4. Step 4: Simplify right side
    100,731.40x = 8,681,535,648.83
  5. Step 5: Solve for x
    x = 8,681,535,648.83/100,731.40
  6. Step 6: Final answer
    x = 86,185.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.