Home / 130,790.41-180,496.70-77,077.69

Finding the Fourth Proportional to 130,790.41, 180,496.70 and 77,077.69

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Solution

The fourth proportional to 130,790.41, 180,496.70 and 77,077.69 is: 106,370.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,790.41 : 180,496.70 = 77,077.69 : x
  2. Step 2: Convert to fraction form
    130,790.41/180,496.70 = 77,077.69/x
  3. Step 3: Cross multiply
    130,790.41x = 180,496.70 × 77,077.69
  4. Step 4: Simplify right side
    130,790.41x = 13,912,268,688.62
  5. Step 5: Solve for x
    x = 13,912,268,688.62/130,790.41
  6. Step 6: Final answer
    x = 106,370.71

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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.