Home / 145,427.40-218,141.10-131,430.60

Finding the Fourth Proportional to 145,427.40, 218,141.10 and 131,430.60

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Solution

The fourth proportional to 145,427.40, 218,141.10 and 131,430.60 is: 197,145.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,427.40 : 218,141.10 = 131,430.60 : x
  2. Step 2: Convert to fraction form
    145,427.40/218,141.10 = 131,430.60/x
  3. Step 3: Cross multiply
    145,427.40x = 218,141.10 × 131,430.60
  4. Step 4: Simplify right side
    145,427.40x = 28,670,415,657.66
  5. Step 5: Solve for x
    x = 28,670,415,657.66/145,427.40
  6. Step 6: Final answer
    x = 197,145.90

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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.