Home / 103,136.49-154,679.67-43,132.50

Finding the Fourth Proportional to 103,136.49, 154,679.67 and 43,132.50

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Solution

The fourth proportional to 103,136.49, 154,679.67 and 43,132.50 is: 64,688.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,136.49 : 154,679.67 = 43,132.50 : x
  2. Step 2: Convert to fraction form
    103,136.49/154,679.67 = 43,132.50/x
  3. Step 3: Cross multiply
    103,136.49x = 154,679.67 × 43,132.50
  4. Step 4: Simplify right side
    103,136.49x = 6,671,720,866.28
  5. Step 5: Solve for x
    x = 6,671,720,866.28/103,136.49
  6. Step 6: Final answer
    x = 64,688.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.