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Finding the Fourth Proportional to 155,511.78, 214,672.47 and 104,554.08

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Solution

The fourth proportional to 155,511.78, 214,672.47 and 104,554.08 is: 144,329.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,511.78 : 214,672.47 = 104,554.08 : x
  2. Step 2: Convert to fraction form
    155,511.78/214,672.47 = 104,554.08/x
  3. Step 3: Cross multiply
    155,511.78x = 214,672.47 × 104,554.08
  4. Step 4: Simplify right side
    155,511.78x = 22,444,882,602.18
  5. Step 5: Solve for x
    x = 22,444,882,602.18/155,511.78
  6. Step 6: Final answer
    x = 144,329.15

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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.