Home / 191,764.40-287,643.90-86,583.20

Finding the Fourth Proportional to 191,764.40, 287,643.90 and 86,583.20

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Solution

The fourth proportional to 191,764.40, 287,643.90 and 86,583.20 is: 129,873.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,764.40 : 287,643.90 = 86,583.20 : x
  2. Step 2: Convert to fraction form
    191,764.40/287,643.90 = 86,583.20/x
  3. Step 3: Cross multiply
    191,764.40x = 287,643.90 × 86,583.20
  4. Step 4: Simplify right side
    191,764.40x = 24,905,129,322.48
  5. Step 5: Solve for x
    x = 24,905,129,322.48/191,764.40
  6. Step 6: Final answer
    x = 129,873.58

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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.