Home / 130,870.69-180,555.55-85,575.18

Finding the Fourth Proportional to 130,870.69, 180,555.55 and 85,575.18

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Solution

The fourth proportional to 130,870.69, 180,555.55 and 85,575.18 is: 118,063.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,870.69 : 180,555.55 = 85,575.18 : x
  2. Step 2: Convert to fraction form
    130,870.69/180,555.55 = 85,575.18/x
  3. Step 3: Cross multiply
    130,870.69x = 180,555.55 × 85,575.18
  4. Step 4: Simplify right side
    130,870.69x = 15,451,073,691.25
  5. Step 5: Solve for x
    x = 15,451,073,691.25/130,870.69
  6. Step 6: Final answer
    x = 118,063.67

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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.