Home / 190,705.95-286,011-78,417.54

Finding the Fourth Proportional to 190,705.95, 286,011 and 78,417.54

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Solution

The fourth proportional to 190,705.95, 286,011 and 78,417.54 is: 117,606.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,705.95 : 286,011 = 78,417.54 : x
  2. Step 2: Convert to fraction form
    190,705.95/286,011 = 78,417.54/x
  3. Step 3: Cross multiply
    190,705.95x = 286,011 × 78,417.54
  4. Step 4: Simplify right side
    190,705.95x = 22,428,279,032.94
  5. Step 5: Solve for x
    x = 22,428,279,032.94/190,705.95
  6. Step 6: Final answer
    x = 117,606.60

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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.