Home / 163,131.48-225,117.72-91,509.84

Finding the Fourth Proportional to 163,131.48, 225,117.72 and 91,509.84

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Solution

The fourth proportional to 163,131.48, 225,117.72 and 91,509.84 is: 126,281.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,131.48 : 225,117.72 = 91,509.84 : x
  2. Step 2: Convert to fraction form
    163,131.48/225,117.72 = 91,509.84/x
  3. Step 3: Cross multiply
    163,131.48x = 225,117.72 × 91,509.84
  4. Step 4: Simplify right side
    163,131.48x = 20,600,486,538.36
  5. Step 5: Solve for x
    x = 20,600,486,538.36/163,131.48
  6. Step 6: Final answer
    x = 126,281.49

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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.