Home / 143,089.05-197,422.88-89,428.58

Finding the Fourth Proportional to 143,089.05, 197,422.88 and 89,428.58

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Solution

The fourth proportional to 143,089.05, 197,422.88 and 89,428.58 is: 123,386.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,089.05 : 197,422.88 = 89,428.58 : x
  2. Step 2: Convert to fraction form
    143,089.05/197,422.88 = 89,428.58/x
  3. Step 3: Cross multiply
    143,089.05x = 197,422.88 × 89,428.58
  4. Step 4: Simplify right side
    143,089.05x = 17,655,247,817.91
  5. Step 5: Solve for x
    x = 17,655,247,817.91/143,089.05
  6. Step 6: Final answer
    x = 123,386.44

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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.