Home / 157,139.28-216,926.37-100,583.46

Finding the Fourth Proportional to 157,139.28, 216,926.37 and 100,583.46

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Solution

The fourth proportional to 157,139.28, 216,926.37 and 100,583.46 is: 138,852.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,139.28 : 216,926.37 = 100,583.46 : x
  2. Step 2: Convert to fraction form
    157,139.28/216,926.37 = 100,583.46/x
  3. Step 3: Cross multiply
    157,139.28x = 216,926.37 × 100,583.46
  4. Step 4: Simplify right side
    157,139.28x = 21,819,204,859.84
  5. Step 5: Solve for x
    x = 21,819,204,859.84/157,139.28
  6. Step 6: Final answer
    x = 138,852.65

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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.