Home / 121,143.06-167,157.47-67,426.70

Finding the Fourth Proportional to 121,143.06, 167,157.47 and 67,426.70

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Solution

The fourth proportional to 121,143.06, 167,157.47 and 67,426.70 is: 93,037.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,143.06 : 167,157.47 = 67,426.70 : x
  2. Step 2: Convert to fraction form
    121,143.06/167,157.47 = 67,426.70/x
  3. Step 3: Cross multiply
    121,143.06x = 167,157.47 × 67,426.70
  4. Step 4: Simplify right side
    121,143.06x = 11,270,875,915.23
  5. Step 5: Solve for x
    x = 11,270,875,915.23/121,143.06
  6. Step 6: Final answer
    x = 93,037.74

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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.