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Finding the Fourth Proportional to 137,130.40, 205,606.80 and 58,223.20

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Solution

The fourth proportional to 137,130.40, 205,606.80 and 58,223.20 is: 87,297.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,130.40 : 205,606.80 = 58,223.20 : x
  2. Step 2: Convert to fraction form
    137,130.40/205,606.80 = 58,223.20/x
  3. Step 3: Cross multiply
    137,130.40x = 205,606.80 × 58,223.20
  4. Step 4: Simplify right side
    137,130.40x = 11,971,085,837.76
  5. Step 5: Solve for x
    x = 11,971,085,837.76/137,130.40
  6. Step 6: Final answer
    x = 87,297.10

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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.