Home / 345,129.36-517,660.02-108,465.72

Finding the Fourth Proportional to 345,129.36, 517,660.02 and 108,465.72

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Solution

The fourth proportional to 345,129.36, 517,660.02 and 108,465.72 is: 162,687.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,129.36 : 517,660.02 = 108,465.72 : x
  2. Step 2: Convert to fraction form
    345,129.36/517,660.02 = 108,465.72/x
  3. Step 3: Cross multiply
    345,129.36x = 517,660.02 × 108,465.72
  4. Step 4: Simplify right side
    345,129.36x = 56,148,366,784.51
  5. Step 5: Solve for x
    x = 56,148,366,784.51/345,129.36
  6. Step 6: Final answer
    x = 162,687.89

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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.