Home / 103,421.09-154,988.11-47,123.61

Finding the Fourth Proportional to 103,421.09, 154,988.11 and 47,123.61

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Solution

The fourth proportional to 103,421.09, 154,988.11 and 47,123.61 is: 70,620.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,421.09 : 154,988.11 = 47,123.61 : x
  2. Step 2: Convert to fraction form
    103,421.09/154,988.11 = 47,123.61/x
  3. Step 3: Cross multiply
    103,421.09x = 154,988.11 × 47,123.61
  4. Step 4: Simplify right side
    103,421.09x = 7,303,599,250.28
  5. Step 5: Solve for x
    x = 7,303,599,250.28/103,421.09
  6. Step 6: Final answer
    x = 70,620.02

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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.