Home / 190,905.80-286,358.70-102,113.60

Finding the Fourth Proportional to 190,905.80, 286,358.70 and 102,113.60

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Solution

The fourth proportional to 190,905.80, 286,358.70 and 102,113.60 is: 153,170.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,905.80 : 286,358.70 = 102,113.60 : x
  2. Step 2: Convert to fraction form
    190,905.80/286,358.70 = 102,113.60/x
  3. Step 3: Cross multiply
    190,905.80x = 286,358.70 × 102,113.60
  4. Step 4: Simplify right side
    190,905.80x = 29,241,117,748.32
  5. Step 5: Solve for x
    x = 29,241,117,748.32/190,905.80
  6. Step 6: Final answer
    x = 153,170.40

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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.