Home / 131,401.24-181,312.84-74,813.72

Finding the Fourth Proportional to 131,401.24, 181,312.84 and 74,813.72

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Solution

The fourth proportional to 131,401.24, 181,312.84 and 74,813.72 is: 103,231.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,401.24 : 181,312.84 = 74,813.72 : x
  2. Step 2: Convert to fraction form
    131,401.24/181,312.84 = 74,813.72/x
  3. Step 3: Cross multiply
    131,401.24x = 181,312.84 × 74,813.72
  4. Step 4: Simplify right side
    131,401.24x = 13,564,688,044.16
  5. Step 5: Solve for x
    x = 13,564,688,044.16/131,401.24
  6. Step 6: Final answer
    x = 103,231.05

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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.