Home / 138,133.32-190,624.89-77,703.48

Finding the Fourth Proportional to 138,133.32, 190,624.89 and 77,703.48

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Solution

The fourth proportional to 138,133.32, 190,624.89 and 77,703.48 is: 107,231.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,133.32 : 190,624.89 = 77,703.48 : x
  2. Step 2: Convert to fraction form
    138,133.32/190,624.89 = 77,703.48/x
  3. Step 3: Cross multiply
    138,133.32x = 190,624.89 × 77,703.48
  4. Step 4: Simplify right side
    138,133.32x = 14,812,217,327.62
  5. Step 5: Solve for x
    x = 14,812,217,327.62/138,133.32
  6. Step 6: Final answer
    x = 107,231.31

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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.