Home / 130,628.28-180,283.71-76,918.29

Finding the Fourth Proportional to 130,628.28, 180,283.71 and 76,918.29

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Solution

The fourth proportional to 130,628.28, 180,283.71 and 76,918.29 is: 106,157.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,628.28 : 180,283.71 = 76,918.29 : x
  2. Step 2: Convert to fraction form
    130,628.28/180,283.71 = 76,918.29/x
  3. Step 3: Cross multiply
    130,628.28x = 180,283.71 × 76,918.29
  4. Step 4: Simplify right side
    130,628.28x = 13,867,114,881.87
  5. Step 5: Solve for x
    x = 13,867,114,881.87/130,628.28
  6. Step 6: Final answer
    x = 106,157.07

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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.