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Finding the Fourth Proportional to 89,895.60, 134,875.80 and 86,655.60

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Solution

The fourth proportional to 89,895.60, 134,875.80 and 86,655.60 is: 130,014.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,895.60 : 134,875.80 = 86,655.60 : x
  2. Step 2: Convert to fraction form
    89,895.60/134,875.80 = 86,655.60/x
  3. Step 3: Cross multiply
    89,895.60x = 134,875.80 × 86,655.60
  4. Step 4: Simplify right side
    89,895.60x = 11,687,743,374.48
  5. Step 5: Solve for x
    x = 11,687,743,374.48/89,895.60
  6. Step 6: Final answer
    x = 130,014.63

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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.