Home / 152,381.05-228,353.78-85,681.19

Finding the Fourth Proportional to 152,381.05, 228,353.78 and 85,681.19

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Solution

The fourth proportional to 152,381.05, 228,353.78 and 85,681.19 is: 128,399.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,381.05 : 228,353.78 = 85,681.19 : x
  2. Step 2: Convert to fraction form
    152,381.05/228,353.78 = 85,681.19/x
  3. Step 3: Cross multiply
    152,381.05x = 228,353.78 × 85,681.19
  4. Step 4: Simplify right side
    152,381.05x = 19,565,624,396.49
  5. Step 5: Solve for x
    x = 19,565,624,396.49/152,381.05
  6. Step 6: Final answer
    x = 128,399.33

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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.