Home / 115,720.90-173,423.70-70,758

Finding the Fourth Proportional to 115,720.90, 173,423.70 and 70,758

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Solution

The fourth proportional to 115,720.90, 173,423.70 and 70,758 is: 106,040.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,720.90 : 173,423.70 = 70,758 : x
  2. Step 2: Convert to fraction form
    115,720.90/173,423.70 = 70,758/x
  3. Step 3: Cross multiply
    115,720.90x = 173,423.70 × 70,758
  4. Step 4: Simplify right side
    115,720.90x = 12,271,114,164.60
  5. Step 5: Solve for x
    x = 12,271,114,164.60/115,720.90
  6. Step 6: Final answer
    x = 106,040.61

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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.