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Finding the Fourth Proportional to 181,988.60, 272,885.70 and 76,688.60

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Solution

The fourth proportional to 181,988.60, 272,885.70 and 76,688.60 is: 114,991.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,988.60 : 272,885.70 = 76,688.60 : x
  2. Step 2: Convert to fraction form
    181,988.60/272,885.70 = 76,688.60/x
  3. Step 3: Cross multiply
    181,988.60x = 272,885.70 × 76,688.60
  4. Step 4: Simplify right side
    181,988.60x = 20,927,222,293.02
  5. Step 5: Solve for x
    x = 20,927,222,293.02/181,988.60
  6. Step 6: Final answer
    x = 114,991.94

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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.