Home / 143,459.82-197,966.70-78,927.84

Finding the Fourth Proportional to 143,459.82, 197,966.70 and 78,927.84

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Solution

The fourth proportional to 143,459.82, 197,966.70 and 78,927.84 is: 108,916.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,459.82 : 197,966.70 = 78,927.84 : x
  2. Step 2: Convert to fraction form
    143,459.82/197,966.70 = 78,927.84/x
  3. Step 3: Cross multiply
    143,459.82x = 197,966.70 × 78,927.84
  4. Step 4: Simplify right side
    143,459.82x = 15,625,084,022.93
  5. Step 5: Solve for x
    x = 15,625,084,022.93/143,459.82
  6. Step 6: Final answer
    x = 108,916.10

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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.