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Finding the Fourth Proportional to 194,655.60, 291,886.20 and 89,355.60

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Solution

The fourth proportional to 194,655.60, 291,886.20 and 89,355.60 is: 133,988.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,655.60 : 291,886.20 = 89,355.60 : x
  2. Step 2: Convert to fraction form
    194,655.60/291,886.20 = 89,355.60/x
  3. Step 3: Cross multiply
    194,655.60x = 291,886.20 × 89,355.60
  4. Step 4: Simplify right side
    194,655.60x = 26,081,666,532.72
  5. Step 5: Solve for x
    x = 26,081,666,532.72/194,655.60
  6. Step 6: Final answer
    x = 133,988.78

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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.