Home / 131,858.03-181,964.96-71,428.68

Finding the Fourth Proportional to 131,858.03, 181,964.96 and 71,428.68

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Solution

The fourth proportional to 131,858.03, 181,964.96 and 71,428.68 is: 98,572.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,858.03 : 181,964.96 = 71,428.68 : x
  2. Step 2: Convert to fraction form
    131,858.03/181,964.96 = 71,428.68/x
  3. Step 3: Cross multiply
    131,858.03x = 181,964.96 × 71,428.68
  4. Step 4: Simplify right side
    131,858.03x = 12,997,516,809.77
  5. Step 5: Solve for x
    x = 12,997,516,809.77/131,858.03
  6. Step 6: Final answer
    x = 98,572.05

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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.