Home / 100,733.79-139,032.40-57,742.12

Finding the Fourth Proportional to 100,733.79, 139,032.40 and 57,742.12

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Solution

The fourth proportional to 100,733.79, 139,032.40 and 57,742.12 is: 79,695.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,733.79 : 139,032.40 = 57,742.12 : x
  2. Step 2: Convert to fraction form
    100,733.79/139,032.40 = 57,742.12/x
  3. Step 3: Cross multiply
    100,733.79x = 139,032.40 × 57,742.12
  4. Step 4: Simplify right side
    100,733.79x = 8,028,025,524.69
  5. Step 5: Solve for x
    x = 8,028,025,524.69/100,733.79
  6. Step 6: Final answer
    x = 79,695.46

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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.