Home / 145,216,141.92-200,398,317.48-79,136,658.72

Finding the Fourth Proportional to 145,216,141.92, 200,398,317.48 and 79,136,658.72

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Solution

The fourth proportional to 145,216,141.92, 200,398,317.48 and 79,136,658.72 is: 109,208,611.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,216,141.92 : 200,398,317.48 = 79,136,658.72 : x
  2. Step 2: Convert to fraction form
    145,216,141.92/200,398,317.48 = 79,136,658.72/x
  3. Step 3: Cross multiply
    145,216,141.92x = 200,398,317.48 × 79,136,658.72
  4. Step 4: Simplify right side
    145,216,141.92x = 15,858,853,258,476,970
  5. Step 5: Solve for x
    x = 15,858,853,258,476,970/145,216,141.92
  6. Step 6: Final answer
    x = 109,208,611.72

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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.