Home / 131,813.66-181,901.81-71,384.11

Finding the Fourth Proportional to 131,813.66, 181,901.81 and 71,384.11

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Solution

The fourth proportional to 131,813.66, 181,901.81 and 71,384.11 is: 98,509.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,813.66 : 181,901.81 = 71,384.11 : x
  2. Step 2: Convert to fraction form
    131,813.66/181,901.81 = 71,384.11/x
  3. Step 3: Cross multiply
    131,813.66x = 181,901.81 × 71,384.11
  4. Step 4: Simplify right side
    131,813.66x = 12,984,898,537.94
  5. Step 5: Solve for x
    x = 12,984,898,537.94/131,813.66
  6. Step 6: Final answer
    x = 98,509.50

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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.