Home / 190,386.52-285,486.18-78,036.28

Finding the Fourth Proportional to 190,386.52, 285,486.18 and 78,036.28

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Solution

The fourth proportional to 190,386.52, 285,486.18 and 78,036.28 is: 117,016.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,386.52 : 285,486.18 = 78,036.28 : x
  2. Step 2: Convert to fraction form
    190,386.52/285,486.18 = 78,036.28/x
  3. Step 3: Cross multiply
    190,386.52x = 285,486.18 × 78,036.28
  4. Step 4: Simplify right side
    190,386.52x = 22,278,279,478.61
  5. Step 5: Solve for x
    x = 22,278,279,478.61/190,386.52
  6. Step 6: Final answer
    x = 117,016.05

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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.