Home / 130,672.71-180,429.92-100,410.33

Finding the Fourth Proportional to 130,672.71, 180,429.92 and 100,410.33

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Solution

The fourth proportional to 130,672.71, 180,429.92 and 100,410.33 is: 138,644.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,672.71 : 180,429.92 = 100,410.33 : x
  2. Step 2: Convert to fraction form
    130,672.71/180,429.92 = 100,410.33/x
  3. Step 3: Cross multiply
    130,672.71x = 180,429.92 × 100,410.33
  4. Step 4: Simplify right side
    130,672.71x = 18,117,027,307.02
  5. Step 5: Solve for x
    x = 18,117,027,307.02/130,672.71
  6. Step 6: Final answer
    x = 138,644.31

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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.