Home / 122,128.74-168,550.20-70,447.86

Finding the Fourth Proportional to 122,128.74, 168,550.20 and 70,447.86

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Solution

The fourth proportional to 122,128.74, 168,550.20 and 70,447.86 is: 97,225.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,128.74 : 168,550.20 = 70,447.86 : x
  2. Step 2: Convert to fraction form
    122,128.74/168,550.20 = 70,447.86/x
  3. Step 3: Cross multiply
    122,128.74x = 168,550.20 × 70,447.86
  4. Step 4: Simplify right side
    122,128.74x = 11,874,000,892.57
  5. Step 5: Solve for x
    x = 11,874,000,892.57/122,128.74
  6. Step 6: Final answer
    x = 97,225.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.