Home / 131,421.70-181,362.11-70,992.35

Finding the Fourth Proportional to 131,421.70, 181,362.11 and 70,992.35

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Solution

The fourth proportional to 131,421.70, 181,362.11 and 70,992.35 is: 97,969.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,421.70 : 181,362.11 = 70,992.35 : x
  2. Step 2: Convert to fraction form
    131,421.70/181,362.11 = 70,992.35/x
  3. Step 3: Cross multiply
    131,421.70x = 181,362.11 × 70,992.35
  4. Step 4: Simplify right side
    131,421.70x = 12,875,321,483.05
  5. Step 5: Solve for x
    x = 12,875,321,483.05/131,421.70
  6. Step 6: Final answer
    x = 97,969.52

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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.