Home / 135,111.32-186,434.56-76,969.58

Finding the Fourth Proportional to 135,111.32, 186,434.56 and 76,969.58

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Solution

The fourth proportional to 135,111.32, 186,434.56 and 76,969.58 is: 106,207.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,111.32 : 186,434.56 = 76,969.58 : x
  2. Step 2: Convert to fraction form
    135,111.32/186,434.56 = 76,969.58/x
  3. Step 3: Cross multiply
    135,111.32x = 186,434.56 × 76,969.58
  4. Step 4: Simplify right side
    135,111.32x = 14,349,789,731.24
  5. Step 5: Solve for x
    x = 14,349,789,731.24/135,111.32
  6. Step 6: Final answer
    x = 106,207.16

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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.