Home / 131,433.50-197,561.78-86,742.04

Finding the Fourth Proportional to 131,433.50, 197,561.78 and 86,742.04

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Solution

The fourth proportional to 131,433.50, 197,561.78 and 86,742.04 is: 130,384.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,433.50 : 197,561.78 = 86,742.04 : x
  2. Step 2: Convert to fraction form
    131,433.50/197,561.78 = 86,742.04/x
  3. Step 3: Cross multiply
    131,433.50x = 197,561.78 × 86,742.04
  4. Step 4: Simplify right side
    131,433.50x = 17,136,911,823.23
  5. Step 5: Solve for x
    x = 17,136,911,823.23/131,433.50
  6. Step 6: Final answer
    x = 130,384.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.