Home / 156,619.46-216,136.47-85,000.10

Finding the Fourth Proportional to 156,619.46, 216,136.47 and 85,000.10

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Solution

The fourth proportional to 156,619.46, 216,136.47 and 85,000.10 is: 117,301.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,619.46 : 216,136.47 = 85,000.10 : x
  2. Step 2: Convert to fraction form
    156,619.46/216,136.47 = 85,000.10/x
  3. Step 3: Cross multiply
    156,619.46x = 216,136.47 × 85,000.10
  4. Step 4: Simplify right side
    156,619.46x = 18,371,621,563.65
  5. Step 5: Solve for x
    x = 18,371,621,563.65/156,619.46
  6. Step 6: Final answer
    x = 117,301.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.