Home / 98,155.40-135,455.10-55,714.64

Finding the Fourth Proportional to 98,155.40, 135,455.10 and 55,714.64

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Solution

The fourth proportional to 98,155.40, 135,455.10 and 55,714.64 is: 76,886.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,155.40 : 135,455.10 = 55,714.64 : x
  2. Step 2: Convert to fraction form
    98,155.40/135,455.10 = 55,714.64/x
  3. Step 3: Cross multiply
    98,155.40x = 135,455.10 × 55,714.64
  4. Step 4: Simplify right side
    98,155.40x = 7,546,832,132.66
  5. Step 5: Solve for x
    x = 7,546,832,132.66/98,155.40
  6. Step 6: Final answer
    x = 76,886.57

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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.