Home / 109,421.31-151,002.55-61,674.66

Finding the Fourth Proportional to 109,421.31, 151,002.55 and 61,674.66

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Solution

The fourth proportional to 109,421.31, 151,002.55 and 61,674.66 is: 85,111.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,421.31 : 151,002.55 = 61,674.66 : x
  2. Step 2: Convert to fraction form
    109,421.31/151,002.55 = 61,674.66/x
  3. Step 3: Cross multiply
    109,421.31x = 151,002.55 × 61,674.66
  4. Step 4: Simplify right side
    109,421.31x = 9,313,030,756.24
  5. Step 5: Solve for x
    x = 9,313,030,756.24/109,421.31
  6. Step 6: Final answer
    x = 85,111.67

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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.