Home / 121,094.94-167,039.91-78,681.54

Finding the Fourth Proportional to 121,094.94, 167,039.91 and 78,681.54

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Solution

The fourth proportional to 121,094.94, 167,039.91 and 78,681.54 is: 108,534.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,094.94 : 167,039.91 = 78,681.54 : x
  2. Step 2: Convert to fraction form
    121,094.94/167,039.91 = 78,681.54/x
  3. Step 3: Cross multiply
    121,094.94x = 167,039.91 × 78,681.54
  4. Step 4: Simplify right side
    121,094.94x = 13,142,957,360.26
  5. Step 5: Solve for x
    x = 13,142,957,360.26/121,094.94
  6. Step 6: Final answer
    x = 108,534.32

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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.