Home / 135,111.66-186,444.23-74,678.91

Finding the Fourth Proportional to 135,111.66, 186,444.23 and 74,678.91

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Solution

The fourth proportional to 135,111.66, 186,444.23 and 74,678.91 is: 103,051.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,111.66 : 186,444.23 = 74,678.91 : x
  2. Step 2: Convert to fraction form
    135,111.66/186,444.23 = 74,678.91/x
  3. Step 3: Cross multiply
    135,111.66x = 186,444.23 × 74,678.91
  4. Step 4: Simplify right side
    135,111.66x = 13,923,451,498.79
  5. Step 5: Solve for x
    x = 13,923,451,498.79/135,111.66
  6. Step 6: Final answer
    x = 103,051.44

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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.