Home / 130,483.44-180,153.89-100,214.69

Finding the Fourth Proportional to 130,483.44, 180,153.89 and 100,214.69

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Solution

The fourth proportional to 130,483.44, 180,153.89 and 100,214.69 is: 138,362.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,483.44 : 180,153.89 = 100,214.69 : x
  2. Step 2: Convert to fraction form
    130,483.44/180,153.89 = 100,214.69/x
  3. Step 3: Cross multiply
    130,483.44x = 180,153.89 × 100,214.69
  4. Step 4: Simplify right side
    130,483.44x = 18,054,064,836.80
  5. Step 5: Solve for x
    x = 18,054,064,836.80/130,483.44
  6. Step 6: Final answer
    x = 138,362.88

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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.