Home / 156,828.30-216,424.02-85,208.28

Finding the Fourth Proportional to 156,828.30, 216,424.02 and 85,208.28

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Solution

The fourth proportional to 156,828.30, 216,424.02 and 85,208.28 is: 117,587.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,828.30 : 216,424.02 = 85,208.28 : x
  2. Step 2: Convert to fraction form
    156,828.30/216,424.02 = 85,208.28/x
  3. Step 3: Cross multiply
    156,828.30x = 216,424.02 × 85,208.28
  4. Step 4: Simplify right side
    156,828.30x = 18,441,118,494.89
  5. Step 5: Solve for x
    x = 18,441,118,494.89/156,828.30
  6. Step 6: Final answer
    x = 117,587.95

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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.