Home / 156,935.26-216,570-85,315.60

Finding the Fourth Proportional to 156,935.26, 216,570 and 85,315.60

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Solution

The fourth proportional to 156,935.26, 216,570 and 85,315.60 is: 117,735.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,935.26 : 216,570 = 85,315.60 : x
  2. Step 2: Convert to fraction form
    156,935.26/216,570 = 85,315.60/x
  3. Step 3: Cross multiply
    156,935.26x = 216,570 × 85,315.60
  4. Step 4: Simplify right side
    156,935.26x = 18,476,799,492
  5. Step 5: Solve for x
    x = 18,476,799,492/156,935.26
  6. Step 6: Final answer
    x = 117,735.17

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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.