Home / 209,440.08-314,159.04-84,780

Finding the Fourth Proportional to 209,440.08, 314,159.04 and 84,780

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Solution

The fourth proportional to 209,440.08, 314,159.04 and 84,780 is: 127,169.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,440.08 : 314,159.04 = 84,780 : x
  2. Step 2: Convert to fraction form
    209,440.08/314,159.04 = 84,780/x
  3. Step 3: Cross multiply
    209,440.08x = 314,159.04 × 84,780
  4. Step 4: Simplify right side
    209,440.08x = 26,634,403,411.20
  5. Step 5: Solve for x
    x = 26,634,403,411.20/209,440.08
  6. Step 6: Final answer
    x = 127,169.56

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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.