Home / 121,005.28-181,493.34-42,112.90

Finding the Fourth Proportional to 121,005.28, 181,493.34 and 42,112.90

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Solution

The fourth proportional to 121,005.28, 181,493.34 and 42,112.90 is: 63,164.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,005.28 : 181,493.34 = 42,112.90 : x
  2. Step 2: Convert to fraction form
    121,005.28/181,493.34 = 42,112.90/x
  3. Step 3: Cross multiply
    121,005.28x = 181,493.34 × 42,112.90
  4. Step 4: Simplify right side
    121,005.28x = 7,643,210,878.09
  5. Step 5: Solve for x
    x = 7,643,210,878.09/121,005.28
  6. Step 6: Final answer
    x = 63,164.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.