Home / 154,684.45-213,462.54-86,701.30

Finding the Fourth Proportional to 154,684.45, 213,462.54 and 86,701.30

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Solution

The fourth proportional to 154,684.45, 213,462.54 and 86,701.30 is: 119,646.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,684.45 : 213,462.54 = 86,701.30 : x
  2. Step 2: Convert to fraction form
    154,684.45/213,462.54 = 86,701.30/x
  3. Step 3: Cross multiply
    154,684.45x = 213,462.54 × 86,701.30
  4. Step 4: Simplify right side
    154,684.45x = 18,507,479,719.30
  5. Step 5: Solve for x
    x = 18,507,479,719.30/154,684.45
  6. Step 6: Final answer
    x = 119,646.67

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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.