Home / 207,870.55-286,854.37-131,430.79

Finding the Fourth Proportional to 207,870.55, 286,854.37 and 131,430.79

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Solution

The fourth proportional to 207,870.55, 286,854.37 and 131,430.79 is: 181,370.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,870.55 : 286,854.37 = 131,430.79 : x
  2. Step 2: Convert to fraction form
    207,870.55/286,854.37 = 131,430.79/x
  3. Step 3: Cross multiply
    207,870.55x = 286,854.37 × 131,430.79
  4. Step 4: Simplify right side
    207,870.55x = 37,701,496,464.05
  5. Step 5: Solve for x
    x = 37,701,496,464.05/207,870.55
  6. Step 6: Final answer
    x = 181,370.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.