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Finding the Fourth Proportional to 75,187.89, 112,802.63 and 66,925.62

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Solution

The fourth proportional to 75,187.89, 112,802.63 and 66,925.62 is: 100,406.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,187.89 : 112,802.63 = 66,925.62 : x
  2. Step 2: Convert to fraction form
    75,187.89/112,802.63 = 66,925.62/x
  3. Step 3: Cross multiply
    75,187.89x = 112,802.63 × 66,925.62
  4. Step 4: Simplify right side
    75,187.89x = 7,549,385,615.75
  5. Step 5: Solve for x
    x = 7,549,385,615.75/75,187.89
  6. Step 6: Final answer
    x = 100,406.94

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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.