Home / 130,735.12-180,407.84-74,151.76

Finding the Fourth Proportional to 130,735.12, 180,407.84 and 74,151.76

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Solution

The fourth proportional to 130,735.12, 180,407.84 and 74,151.76 is: 102,325.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,735.12 : 180,407.84 = 74,151.76 : x
  2. Step 2: Convert to fraction form
    130,735.12/180,407.84 = 74,151.76/x
  3. Step 3: Cross multiply
    130,735.12x = 180,407.84 × 74,151.76
  4. Step 4: Simplify right side
    130,735.12x = 13,377,558,853.80
  5. Step 5: Solve for x
    x = 13,377,558,853.80/130,735.12
  6. Step 6: Final answer
    x = 102,325.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.