Home / 121,970.85-168,297.60-70,279.89

Finding the Fourth Proportional to 121,970.85, 168,297.60 and 70,279.89

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Solution

The fourth proportional to 121,970.85, 168,297.60 and 70,279.89 is: 96,973.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,970.85 : 168,297.60 = 70,279.89 : x
  2. Step 2: Convert to fraction form
    121,970.85/168,297.60 = 70,279.89/x
  3. Step 3: Cross multiply
    121,970.85x = 168,297.60 × 70,279.89
  4. Step 4: Simplify right side
    121,970.85x = 11,827,936,815.26
  5. Step 5: Solve for x
    x = 11,827,936,815.26/121,970.85
  6. Step 6: Final answer
    x = 96,973.47

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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.