Home / 98,790.72-136,043.96-85,864.32

Finding the Fourth Proportional to 98,790.72, 136,043.96 and 85,864.32

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Solution

The fourth proportional to 98,790.72, 136,043.96 and 85,864.32 is: 118,243.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,790.72 : 136,043.96 = 85,864.32 : x
  2. Step 2: Convert to fraction form
    98,790.72/136,043.96 = 85,864.32/x
  3. Step 3: Cross multiply
    98,790.72x = 136,043.96 × 85,864.32
  4. Step 4: Simplify right side
    98,790.72x = 11,681,322,115.51
  5. Step 5: Solve for x
    x = 11,681,322,115.51/98,790.72
  6. Step 6: Final answer
    x = 118,243.11

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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.