Home / 138,226.96-190,771.50-77,809.33

Finding the Fourth Proportional to 138,226.96, 190,771.50 and 77,809.33

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Solution

The fourth proportional to 138,226.96, 190,771.50 and 77,809.33 is: 107,387.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,226.96 : 190,771.50 = 77,809.33 : x
  2. Step 2: Convert to fraction form
    138,226.96/190,771.50 = 77,809.33/x
  3. Step 3: Cross multiply
    138,226.96x = 190,771.50 × 77,809.33
  4. Step 4: Simplify right side
    138,226.96x = 14,843,802,598.10
  5. Step 5: Solve for x
    x = 14,843,802,598.10/138,226.96
  6. Step 6: Final answer
    x = 107,387.17

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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.