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Finding the Fourth Proportional to 190,666.60, 285,999.90 and 48,511.60

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Solution

The fourth proportional to 190,666.60, 285,999.90 and 48,511.60 is: 72,767.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,666.60 : 285,999.90 = 48,511.60 : x
  2. Step 2: Convert to fraction form
    190,666.60/285,999.90 = 48,511.60/x
  3. Step 3: Cross multiply
    190,666.60x = 285,999.90 × 48,511.60
  4. Step 4: Simplify right side
    190,666.60x = 13,874,312,748.84
  5. Step 5: Solve for x
    x = 13,874,312,748.84/190,666.60
  6. Step 6: Final answer
    x = 72,767.40

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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.