Home / 127,688.40-191,459.70-38,928.60

Finding the Fourth Proportional to 127,688.40, 191,459.70 and 38,928.60

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Solution

The fourth proportional to 127,688.40, 191,459.70 and 38,928.60 is: 58,370.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,688.40 : 191,459.70 = 38,928.60 : x
  2. Step 2: Convert to fraction form
    127,688.40/191,459.70 = 38,928.60/x
  3. Step 3: Cross multiply
    127,688.40x = 191,459.70 × 38,928.60
  4. Step 4: Simplify right side
    127,688.40x = 7,453,258,077.42
  5. Step 5: Solve for x
    x = 7,453,258,077.42/127,688.40
  6. Step 6: Final answer
    x = 58,370.67

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1.5x scale

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.