Home / 213,111.17-319,412.54-99,105.08

Finding the Fourth Proportional to 213,111.17, 319,412.54 and 99,105.08

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Solution

The fourth proportional to 213,111.17, 319,412.54 and 99,105.08 is: 148,539.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,111.17 : 319,412.54 = 99,105.08 : x
  2. Step 2: Convert to fraction form
    213,111.17/319,412.54 = 99,105.08/x
  3. Step 3: Cross multiply
    213,111.17x = 319,412.54 × 99,105.08
  4. Step 4: Simplify right side
    213,111.17x = 31,655,405,329.70
  5. Step 5: Solve for x
    x = 31,655,405,329.70/213,111.17
  6. Step 6: Final answer
    x = 148,539.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.