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Finding the Fourth Proportional to 93,187.20, 139,780.80 and 30,849.60

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Solution

The fourth proportional to 93,187.20, 139,780.80 and 30,849.60 is: 46,274.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,187.20 : 139,780.80 = 30,849.60 : x
  2. Step 2: Convert to fraction form
    93,187.20/139,780.80 = 30,849.60/x
  3. Step 3: Cross multiply
    93,187.20x = 139,780.80 × 30,849.60
  4. Step 4: Simplify right side
    93,187.20x = 4,312,181,767.68
  5. Step 5: Solve for x
    x = 4,312,181,767.68/93,187.20
  6. Step 6: Final answer
    x = 46,274.40

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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.