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Finding the Fourth Proportional to 190,810.80, 286,248.60 and 102,040.20

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Solution

The fourth proportional to 190,810.80, 286,248.60 and 102,040.20 is: 153,077.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,810.80 : 286,248.60 = 102,040.20 : x
  2. Step 2: Convert to fraction form
    190,810.80/286,248.60 = 102,040.20/x
  3. Step 3: Cross multiply
    190,810.80x = 286,248.60 × 102,040.20
  4. Step 4: Simplify right side
    190,810.80x = 29,208,864,393.72
  5. Step 5: Solve for x
    x = 29,208,864,393.72/190,810.80
  6. Step 6: Final answer
    x = 153,077.63

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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.