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Finding the Fourth Proportional to 160,858.71, 221,985.28 and 89,238.74

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Solution

The fourth proportional to 160,858.71, 221,985.28 and 89,238.74 is: 123,149.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,858.71 : 221,985.28 = 89,238.74 : x
  2. Step 2: Convert to fraction form
    160,858.71/221,985.28 = 89,238.74/x
  3. Step 3: Cross multiply
    160,858.71x = 221,985.28 × 89,238.74
  4. Step 4: Simplify right side
    160,858.71x = 19,809,685,687.37
  5. Step 5: Solve for x
    x = 19,809,685,687.37/160,858.71
  6. Step 6: Final answer
    x = 123,149.60

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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.