Home / 131,130.40-196,647.60-42,407.20

Finding the Fourth Proportional to 131,130.40, 196,647.60 and 42,407.20

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Solution

The fourth proportional to 131,130.40, 196,647.60 and 42,407.20 is: 63,595.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,130.40 : 196,647.60 = 42,407.20 : x
  2. Step 2: Convert to fraction form
    131,130.40/196,647.60 = 42,407.20/x
  3. Step 3: Cross multiply
    131,130.40x = 196,647.60 × 42,407.20
  4. Step 4: Simplify right side
    131,130.40x = 8,339,274,102.72
  5. Step 5: Solve for x
    x = 8,339,274,102.72/131,130.40
  6. Step 6: Final answer
    x = 63,595.28

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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.