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Finding the Fourth Proportional to 121,457.51, 167,611.60 and 67,746.00

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Solution

The fourth proportional to 121,457.51, 167,611.60 and 67,746.00 is: 93,489.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,457.51 : 167,611.60 = 67,746.00 : x
  2. Step 2: Convert to fraction form
    121,457.51/167,611.60 = 67,746.00/x
  3. Step 3: Cross multiply
    121,457.51x = 167,611.60 × 67,746.00
  4. Step 4: Simplify right side
    121,457.51x = 11,355,015,785.75
  5. Step 5: Solve for x
    x = 11,355,015,785.75/121,457.51
  6. Step 6: Final answer
    x = 93,489.62

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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.