Home / 130,189.32-179,662.56-76,491.60

Finding the Fourth Proportional to 130,189.32, 179,662.56 and 76,491.60

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Solution

The fourth proportional to 130,189.32, 179,662.56 and 76,491.60 is: 105,559.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,189.32 : 179,662.56 = 76,491.60 : x
  2. Step 2: Convert to fraction form
    130,189.32/179,662.56 = 76,491.60/x
  3. Step 3: Cross multiply
    130,189.32x = 179,662.56 × 76,491.60
  4. Step 4: Simplify right side
    130,189.32x = 13,742,676,674.50
  5. Step 5: Solve for x
    x = 13,742,676,674.50/130,189.32
  6. Step 6: Final answer
    x = 105,559.17

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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.