Home / 189,975.56-285,075.23-70,116.89

Finding the Fourth Proportional to 189,975.56, 285,075.23 and 70,116.89

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Solution

The fourth proportional to 189,975.56, 285,075.23 and 70,116.89 is: 105,216.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,975.56 : 285,075.23 = 70,116.89 : x
  2. Step 2: Convert to fraction form
    189,975.56/285,075.23 = 70,116.89/x
  3. Step 3: Cross multiply
    189,975.56x = 285,075.23 × 70,116.89
  4. Step 4: Simplify right side
    189,975.56x = 19,988,586,767.67
  5. Step 5: Solve for x
    x = 19,988,586,767.67/189,975.56
  6. Step 6: Final answer
    x = 105,216.63

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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.