Home / 109,973.79-151,756.20-64,653.71

Finding the Fourth Proportional to 109,973.79, 151,756.20 and 64,653.71

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Solution

The fourth proportional to 109,973.79, 151,756.20 and 64,653.71 is: 89,217.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,973.79 : 151,756.20 = 64,653.71 : x
  2. Step 2: Convert to fraction form
    109,973.79/151,756.20 = 64,653.71/x
  3. Step 3: Cross multiply
    109,973.79x = 151,756.20 × 64,653.71
  4. Step 4: Simplify right side
    109,973.79x = 9,811,600,586.72
  5. Step 5: Solve for x
    x = 9,811,600,586.72/109,973.79
  6. Step 6: Final answer
    x = 89,217.63

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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.