Home / 126,870.37-190,308.64-42,631.75

Finding the Fourth Proportional to 126,870.37, 190,308.64 and 42,631.75

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Solution

The fourth proportional to 126,870.37, 190,308.64 and 42,631.75 is: 63,948.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,870.37 : 190,308.64 = 42,631.75 : x
  2. Step 2: Convert to fraction form
    126,870.37/190,308.64 = 42,631.75/x
  3. Step 3: Cross multiply
    126,870.37x = 190,308.64 × 42,631.75
  4. Step 4: Simplify right side
    126,870.37x = 8,113,190,574.56
  5. Step 5: Solve for x
    x = 8,113,190,574.56/126,870.37
  6. Step 6: Final answer
    x = 63,948.66

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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.