Home / 138,186.96-190,698.83-77,758.62

Finding the Fourth Proportional to 138,186.96, 190,698.83 and 77,758.62

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Solution

The fourth proportional to 138,186.96, 190,698.83 and 77,758.62 is: 107,307.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,186.96 : 190,698.83 = 77,758.62 : x
  2. Step 2: Convert to fraction form
    138,186.96/190,698.83 = 77,758.62/x
  3. Step 3: Cross multiply
    138,186.96x = 190,698.83 × 77,758.62
  4. Step 4: Simplify right side
    138,186.96x = 14,828,477,856.41
  5. Step 5: Solve for x
    x = 14,828,477,856.41/138,186.96
  6. Step 6: Final answer
    x = 107,307.36

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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.