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Finding the Fourth Proportional to 143,075.68, 197,440.68 and 79,411.84

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Solution

The fourth proportional to 143,075.68, 197,440.68 and 79,411.84 is: 109,586.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,075.68 : 197,440.68 = 79,411.84 : x
  2. Step 2: Convert to fraction form
    143,075.68/197,440.68 = 79,411.84/x
  3. Step 3: Cross multiply
    143,075.68x = 197,440.68 × 79,411.84
  4. Step 4: Simplify right side
    143,075.68x = 15,679,127,689.65
  5. Step 5: Solve for x
    x = 15,679,127,689.65/143,075.68
  6. Step 6: Final answer
    x = 109,586.25

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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.