Home / 143,095.41-197,461.77-79,428.18

Finding the Fourth Proportional to 143,095.41, 197,461.77 and 79,428.18

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Solution

The fourth proportional to 143,095.41, 197,461.77 and 79,428.18 is: 109,605.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,095.41 : 197,461.77 = 79,428.18 : x
  2. Step 2: Convert to fraction form
    143,095.41/197,461.77 = 79,428.18/x
  3. Step 3: Cross multiply
    143,095.41x = 197,461.77 × 79,428.18
  4. Step 4: Simplify right side
    143,095.41x = 15,684,029,010.68
  5. Step 5: Solve for x
    x = 15,684,029,010.68/143,095.41
  6. Step 6: Final answer
    x = 109,605.40

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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.