Home / 131,421.56-181,361.91-70,992.20

Finding the Fourth Proportional to 131,421.56, 181,361.91 and 70,992.20

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Solution

The fourth proportional to 131,421.56, 181,361.91 and 70,992.20 is: 97,969.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,421.56 : 181,361.91 = 70,992.20 : x
  2. Step 2: Convert to fraction form
    131,421.56/181,361.91 = 70,992.20/x
  3. Step 3: Cross multiply
    131,421.56x = 181,361.91 × 70,992.20
  4. Step 4: Simplify right side
    131,421.56x = 12,875,281,102.27
  5. Step 5: Solve for x
    x = 12,875,281,102.27/131,421.56
  6. Step 6: Final answer
    x = 97,969.32

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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.