Home / 126,709.51-174,878.75-72,261.79

Finding the Fourth Proportional to 126,709.51, 174,878.75 and 72,261.79

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Solution

The fourth proportional to 126,709.51, 174,878.75 and 72,261.79 is: 99,732.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,709.51 : 174,878.75 = 72,261.79 : x
  2. Step 2: Convert to fraction form
    126,709.51/174,878.75 = 72,261.79/x
  3. Step 3: Cross multiply
    126,709.51x = 174,878.75 × 72,261.79
  4. Step 4: Simplify right side
    126,709.51x = 12,637,051,507.96
  5. Step 5: Solve for x
    x = 12,637,051,507.96/126,709.51
  6. Step 6: Final answer
    x = 99,732.46

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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.