Home / 103,623.85-155,344.65-70,235.65

Finding the Fourth Proportional to 103,623.85, 155,344.65 and 70,235.65

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Solution

The fourth proportional to 103,623.85, 155,344.65 and 70,235.65 is: 105,291.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,623.85 : 155,344.65 = 70,235.65 : x
  2. Step 2: Convert to fraction form
    103,623.85/155,344.65 = 70,235.65/x
  3. Step 3: Cross multiply
    103,623.85x = 155,344.65 × 70,235.65
  4. Step 4: Simplify right side
    103,623.85x = 10,910,732,466.77
  5. Step 5: Solve for x
    x = 10,910,732,466.77/103,623.85
  6. Step 6: Final answer
    x = 105,291.71

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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.