Home / 156,860.34-216,466.81-85,240.38

Finding the Fourth Proportional to 156,860.34, 216,466.81 and 85,240.38

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Solution

The fourth proportional to 156,860.34, 216,466.81 and 85,240.38 is: 117,631.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,860.34 : 216,466.81 = 85,240.38 : x
  2. Step 2: Convert to fraction form
    156,860.34/216,466.81 = 85,240.38/x
  3. Step 3: Cross multiply
    156,860.34x = 216,466.81 × 85,240.38
  4. Step 4: Simplify right side
    156,860.34x = 18,451,713,141.79
  5. Step 5: Solve for x
    x = 18,451,713,141.79/156,860.34
  6. Step 6: Final answer
    x = 117,631.47

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1.5x scale

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.