Home / 156,890.49-216,507.57-85,270.95

Finding the Fourth Proportional to 156,890.49, 216,507.57 and 85,270.95

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Solution

The fourth proportional to 156,890.49, 216,507.57 and 85,270.95 is: 117,673.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,890.49 : 216,507.57 = 85,270.95 : x
  2. Step 2: Convert to fraction form
    156,890.49/216,507.57 = 85,270.95/x
  3. Step 3: Cross multiply
    156,890.49x = 216,507.57 × 85,270.95
  4. Step 4: Simplify right side
    156,890.49x = 18,461,806,176.09
  5. Step 5: Solve for x
    x = 18,461,806,176.09/156,890.49
  6. Step 6: Final answer
    x = 117,673.20

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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.