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Finding the Fourth Proportional to 160,804.52, 221,837.45 and 100,390.06

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Solution

The fourth proportional to 160,804.52, 221,837.45 and 100,390.06 is: 138,492.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,804.52 : 221,837.45 = 100,390.06 : x
  2. Step 2: Convert to fraction form
    160,804.52/221,837.45 = 100,390.06/x
  3. Step 3: Cross multiply
    160,804.52x = 221,837.45 × 100,390.06
  4. Step 4: Simplify right side
    160,804.52x = 22,270,274,915.75
  5. Step 5: Solve for x
    x = 22,270,274,915.75/160,804.52
  6. Step 6: Final answer
    x = 138,492.84

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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.