Home / 191,705.40-287,361.18-86,597.64

Finding the Fourth Proportional to 191,705.40, 287,361.18 and 86,597.64

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Solution

The fourth proportional to 191,705.40, 287,361.18 and 86,597.64 is: 129,807.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,705.40 : 287,361.18 = 86,597.64 : x
  2. Step 2: Convert to fraction form
    191,705.40/287,361.18 = 86,597.64/x
  3. Step 3: Cross multiply
    191,705.40x = 287,361.18 × 86,597.64
  4. Step 4: Simplify right side
    191,705.40x = 24,884,800,015.62
  5. Step 5: Solve for x
    x = 24,884,800,015.62/191,705.40
  6. Step 6: Final answer
    x = 129,807.51

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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.