Home / 131,421.29-181,361.24-70,991.92

Finding the Fourth Proportional to 131,421.29, 181,361.24 and 70,991.92

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Solution

The fourth proportional to 131,421.29, 181,361.24 and 70,991.92 is: 97,968.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,421.29 : 181,361.24 = 70,991.92 : x
  2. Step 2: Convert to fraction form
    131,421.29/181,361.24 = 70,991.92/x
  3. Step 3: Cross multiply
    131,421.29x = 181,361.24 × 70,991.92
  4. Step 4: Simplify right side
    131,421.29x = 12,875,182,641.18
  5. Step 5: Solve for x
    x = 12,875,182,641.18/131,421.29
  6. Step 6: Final answer
    x = 97,968.77

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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.