Home / 103,429.70-155,144.55-68,000.30

Finding the Fourth Proportional to 103,429.70, 155,144.55 and 68,000.30

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Solution

The fourth proportional to 103,429.70, 155,144.55 and 68,000.30 is: 102,000.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,429.70 : 155,144.55 = 68,000.30 : x
  2. Step 2: Convert to fraction form
    103,429.70/155,144.55 = 68,000.30/x
  3. Step 3: Cross multiply
    103,429.70x = 155,144.55 × 68,000.30
  4. Step 4: Simplify right side
    103,429.70x = 10,549,875,943.37
  5. Step 5: Solve for x
    x = 10,549,875,943.37/103,429.70
  6. Step 6: Final answer
    x = 102,000.45

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1.5x scale

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.