Home / 120,389.76-166,055.32-82,598.40

Finding the Fourth Proportional to 120,389.76, 166,055.32 and 82,598.40

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Solution

The fourth proportional to 120,389.76, 166,055.32 and 82,598.40 is: 113,929.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,389.76 : 166,055.32 = 82,598.40 : x
  2. Step 2: Convert to fraction form
    120,389.76/166,055.32 = 82,598.40/x
  3. Step 3: Cross multiply
    120,389.76x = 166,055.32 × 82,598.40
  4. Step 4: Simplify right side
    120,389.76x = 13,715,903,743.49
  5. Step 5: Solve for x
    x = 13,715,903,743.49/120,389.76
  6. Step 6: Final answer
    x = 113,929.16

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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.