Home / 126,318.89-189,486.53-42,075.65

Finding the Fourth Proportional to 126,318.89, 189,486.53 and 42,075.65

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Solution

The fourth proportional to 126,318.89, 189,486.53 and 42,075.65 is: 63,116.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,318.89 : 189,486.53 = 42,075.65 : x
  2. Step 2: Convert to fraction form
    126,318.89/189,486.53 = 42,075.65/x
  3. Step 3: Cross multiply
    126,318.89x = 189,486.53 × 42,075.65
  4. Step 4: Simplify right side
    126,318.89x = 7,972,767,758.18
  5. Step 5: Solve for x
    x = 7,972,767,758.18/126,318.89
  6. Step 6: Final answer
    x = 63,116.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.