Home / 143,075.80-197,444.82-79,411.96

Finding the Fourth Proportional to 143,075.80, 197,444.82 and 79,411.96

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Solution

The fourth proportional to 143,075.80, 197,444.82 and 79,411.96 is: 109,588.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,075.80 : 197,444.82 = 79,411.96 : x
  2. Step 2: Convert to fraction form
    143,075.80/197,444.82 = 79,411.96/x
  3. Step 3: Cross multiply
    143,075.80x = 197,444.82 × 79,411.96
  4. Step 4: Simplify right side
    143,075.80x = 15,679,480,148.05
  5. Step 5: Solve for x
    x = 15,679,480,148.05/143,075.80
  6. Step 6: Final answer
    x = 109,588.62

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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.