Home / 130,835.60-196,253.40-121,212.80

Finding the Fourth Proportional to 130,835.60, 196,253.40 and 121,212.80

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Solution

The fourth proportional to 130,835.60, 196,253.40 and 121,212.80 is: 181,819.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,835.60 : 196,253.40 = 121,212.80 : x
  2. Step 2: Convert to fraction form
    130,835.60/196,253.40 = 121,212.80/x
  3. Step 3: Cross multiply
    130,835.60x = 196,253.40 × 121,212.80
  4. Step 4: Simplify right side
    130,835.60x = 23,788,424,123.52
  5. Step 5: Solve for x
    x = 23,788,424,123.52/130,835.60
  6. Step 6: Final answer
    x = 181,819.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.