Home / 149,455.22-224,314.41-78,428.57

Finding the Fourth Proportional to 149,455.22, 224,314.41 and 78,428.57

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Solution

The fourth proportional to 149,455.22, 224,314.41 and 78,428.57 is: 117,711.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,455.22 : 224,314.41 = 78,428.57 : x
  2. Step 2: Convert to fraction form
    149,455.22/224,314.41 = 78,428.57/x
  3. Step 3: Cross multiply
    149,455.22x = 224,314.41 × 78,428.57
  4. Step 4: Simplify right side
    149,455.22x = 17,592,657,285.12
  5. Step 5: Solve for x
    x = 17,592,657,285.12/149,455.22
  6. Step 6: Final answer
    x = 117,711.90

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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.