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Finding the Fourth Proportional to 186,591.72, 279,807.62 and 86,741.50

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Solution

The fourth proportional to 186,591.72, 279,807.62 and 86,741.50 is: 130,075.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,591.72 : 279,807.62 = 86,741.50 : x
  2. Step 2: Convert to fraction form
    186,591.72/279,807.62 = 86,741.50/x
  3. Step 3: Cross multiply
    186,591.72x = 279,807.62 × 86,741.50
  4. Step 4: Simplify right side
    186,591.72x = 24,270,932,670.23
  5. Step 5: Solve for x
    x = 24,270,932,670.23/186,591.72
  6. Step 6: Final answer
    x = 130,075.08

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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.