Home / 207,316.86-310,778.25-81,038.06

Finding the Fourth Proportional to 207,316.86, 310,778.25 and 81,038.06

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Solution

The fourth proportional to 207,316.86, 310,778.25 and 81,038.06 is: 121,480.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,316.86 : 310,778.25 = 81,038.06 : x
  2. Step 2: Convert to fraction form
    207,316.86/310,778.25 = 81,038.06/x
  3. Step 3: Cross multiply
    207,316.86x = 310,778.25 × 81,038.06
  4. Step 4: Simplify right side
    207,316.86x = 25,184,866,470.20
  5. Step 5: Solve for x
    x = 25,184,866,470.20/207,316.86
  6. Step 6: Final answer
    x = 121,480.07

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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.