Home / 190,710.45-286,017.75-78,422.04

Finding the Fourth Proportional to 190,710.45, 286,017.75 and 78,422.04

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Solution

The fourth proportional to 190,710.45, 286,017.75 and 78,422.04 is: 117,613.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,710.45 : 286,017.75 = 78,422.04 : x
  2. Step 2: Convert to fraction form
    190,710.45/286,017.75 = 78,422.04/x
  3. Step 3: Cross multiply
    190,710.45x = 286,017.75 × 78,422.04
  4. Step 4: Simplify right side
    190,710.45x = 22,430,095,431.21
  5. Step 5: Solve for x
    x = 22,430,095,431.21/190,710.45
  6. Step 6: Final answer
    x = 117,613.35

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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.