Home / 208,359.09-287,529.63-122,316.70

Finding the Fourth Proportional to 208,359.09, 287,529.63 and 122,316.70

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Solution

The fourth proportional to 208,359.09, 287,529.63 and 122,316.70 is: 168,793.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,359.09 : 287,529.63 = 122,316.70 : x
  2. Step 2: Convert to fraction form
    208,359.09/287,529.63 = 122,316.70/x
  3. Step 3: Cross multiply
    208,359.09x = 287,529.63 × 122,316.70
  4. Step 4: Simplify right side
    208,359.09x = 35,169,675,493.82
  5. Step 5: Solve for x
    x = 35,169,675,493.82/208,359.09
  6. Step 6: Final answer
    x = 168,793.57

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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.