Home / 156,713.85-235,171.58-86,643.45

Finding the Fourth Proportional to 156,713.85, 235,171.58 and 86,643.45

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Solution

The fourth proportional to 156,713.85, 235,171.58 and 86,643.45 is: 130,020.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,713.85 : 235,171.58 = 86,643.45 : x
  2. Step 2: Convert to fraction form
    156,713.85/235,171.58 = 86,643.45/x
  3. Step 3: Cross multiply
    156,713.85x = 235,171.58 × 86,643.45
  4. Step 4: Simplify right side
    156,713.85x = 20,376,076,599.93
  5. Step 5: Solve for x
    x = 20,376,076,599.93/156,713.85
  6. Step 6: Final answer
    x = 130,020.90

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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.