Home / 128,297.81-177,043.80-70,933.79

Finding the Fourth Proportional to 128,297.81, 177,043.80 and 70,933.79

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Solution

The fourth proportional to 128,297.81, 177,043.80 and 70,933.79 is: 97,884.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,297.81 : 177,043.80 = 70,933.79 : x
  2. Step 2: Convert to fraction form
    128,297.81/177,043.80 = 70,933.79/x
  3. Step 3: Cross multiply
    128,297.81x = 177,043.80 × 70,933.79
  4. Step 4: Simplify right side
    128,297.81x = 12,558,387,730.00
  5. Step 5: Solve for x
    x = 12,558,387,730.00/128,297.81
  6. Step 6: Final answer
    x = 97,884.66

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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.