Home / 208,121.51-287,176.80-126,407.27

Finding the Fourth Proportional to 208,121.51, 287,176.80 and 126,407.27

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Solution

The fourth proportional to 208,121.51, 287,176.80 and 126,407.27 is: 174,423.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,121.51 : 287,176.80 = 126,407.27 : x
  2. Step 2: Convert to fraction form
    208,121.51/287,176.80 = 126,407.27/x
  3. Step 3: Cross multiply
    208,121.51x = 287,176.80 × 126,407.27
  4. Step 4: Simplify right side
    208,121.51x = 36,301,235,295.34
  5. Step 5: Solve for x
    x = 36,301,235,295.34/208,121.51
  6. Step 6: Final answer
    x = 174,423.27

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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.