Home / 218,775.12-328,037.40-130,090.56

Finding the Fourth Proportional to 218,775.12, 328,037.40 and 130,090.56

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Solution

The fourth proportional to 218,775.12, 328,037.40 and 130,090.56 is: 195,061.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,775.12 : 328,037.40 = 130,090.56 : x
  2. Step 2: Convert to fraction form
    218,775.12/328,037.40 = 130,090.56/x
  3. Step 3: Cross multiply
    218,775.12x = 328,037.40 × 130,090.56
  4. Step 4: Simplify right side
    218,775.12x = 42,674,569,066.94
  5. Step 5: Solve for x
    x = 42,674,569,066.94/218,775.12
  6. Step 6: Final answer
    x = 195,061.34

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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.