Home / 209,935.52-314,870.80-76,784.64

Finding the Fourth Proportional to 209,935.52, 314,870.80 and 76,784.64

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Solution

The fourth proportional to 209,935.52, 314,870.80 and 76,784.64 is: 115,165.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,935.52 : 314,870.80 = 76,784.64 : x
  2. Step 2: Convert to fraction form
    209,935.52/314,870.80 = 76,784.64/x
  3. Step 3: Cross multiply
    209,935.52x = 314,870.80 × 76,784.64
  4. Step 4: Simplify right side
    209,935.52x = 24,177,241,024.51
  5. Step 5: Solve for x
    x = 24,177,241,024.51/209,935.52
  6. Step 6: Final answer
    x = 115,165.08

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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.