Home / 143,068.16-197,434.05-79,405.94

Finding the Fourth Proportional to 143,068.16, 197,434.05 and 79,405.94

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Solution

The fourth proportional to 143,068.16, 197,434.05 and 79,405.94 is: 109,580.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,068.16 : 197,434.05 = 79,405.94 : x
  2. Step 2: Convert to fraction form
    143,068.16/197,434.05 = 79,405.94/x
  3. Step 3: Cross multiply
    143,068.16x = 197,434.05 × 79,405.94
  4. Step 4: Simplify right side
    143,068.16x = 15,677,436,328.26
  5. Step 5: Solve for x
    x = 15,677,436,328.26/143,068.16
  6. Step 6: Final answer
    x = 109,580.19

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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.