Home / 208,741.71-288,213.35-128,277.12

Finding the Fourth Proportional to 208,741.71, 288,213.35 and 128,277.12

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Solution

The fourth proportional to 208,741.71, 288,213.35 and 128,277.12 is: 177,114.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,741.71 : 288,213.35 = 128,277.12 : x
  2. Step 2: Convert to fraction form
    208,741.71/288,213.35 = 128,277.12/x
  3. Step 3: Cross multiply
    208,741.71x = 288,213.35 × 128,277.12
  4. Step 4: Simplify right side
    208,741.71x = 36,971,177,842.17
  5. Step 5: Solve for x
    x = 36,971,177,842.17/208,741.71
  6. Step 6: Final answer
    x = 177,114.47

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1.5x scale

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.