Home / 117,485.10-162,128.86-63,769.68

Finding the Fourth Proportional to 117,485.10, 162,128.86 and 63,769.68

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Solution

The fourth proportional to 117,485.10, 162,128.86 and 63,769.68 is: 88,001.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,485.10 : 162,128.86 = 63,769.68 : x
  2. Step 2: Convert to fraction form
    117,485.10/162,128.86 = 63,769.68/x
  3. Step 3: Cross multiply
    117,485.10x = 162,128.86 × 63,769.68
  4. Step 4: Simplify right side
    117,485.10x = 10,338,905,361.54
  5. Step 5: Solve for x
    x = 10,338,905,361.54/117,485.10
  6. Step 6: Final answer
    x = 88,001.84

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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.