Home / 131,388.72-181,301.76-74,030.64

Finding the Fourth Proportional to 131,388.72, 181,301.76 and 74,030.64

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Solution

The fourth proportional to 131,388.72, 181,301.76 and 74,030.64 is: 102,154.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,388.72 : 181,301.76 = 74,030.64 : x
  2. Step 2: Convert to fraction form
    131,388.72/181,301.76 = 74,030.64/x
  3. Step 3: Cross multiply
    131,388.72x = 181,301.76 × 74,030.64
  4. Step 4: Simplify right side
    131,388.72x = 13,421,885,325.93
  5. Step 5: Solve for x
    x = 13,421,885,325.93/131,388.72
  6. Step 6: Final answer
    x = 102,154.02

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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.