Home / 131,418.08-181,357.01-70,988.72

Finding the Fourth Proportional to 131,418.08, 181,357.01 and 70,988.72

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Solution

The fourth proportional to 131,418.08, 181,357.01 and 70,988.72 is: 97,964.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,418.08 : 181,357.01 = 70,988.72 : x
  2. Step 2: Convert to fraction form
    131,418.08/181,357.01 = 70,988.72/x
  3. Step 3: Cross multiply
    131,418.08x = 181,357.01 × 70,988.72
  4. Step 4: Simplify right side
    131,418.08x = 12,874,302,002.93
  5. Step 5: Solve for x
    x = 12,874,302,002.93/131,418.08
  6. Step 6: Final answer
    x = 97,964.47

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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.