Home / 130,022.48-179,412.80-72,654.56

Finding the Fourth Proportional to 130,022.48, 179,412.80 and 72,654.56

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Solution

The fourth proportional to 130,022.48, 179,412.80 and 72,654.56 is: 100,253.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,022.48 : 179,412.80 = 72,654.56 : x
  2. Step 2: Convert to fraction form
    130,022.48/179,412.80 = 72,654.56/x
  3. Step 3: Cross multiply
    130,022.48x = 179,412.80 × 72,654.56
  4. Step 4: Simplify right side
    130,022.48x = 13,035,158,042.37
  5. Step 5: Solve for x
    x = 13,035,158,042.37/130,022.48
  6. Step 6: Final answer
    x = 100,253.11

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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.