Home / 208,423.81-287,630.21-127,895.83

Finding the Fourth Proportional to 208,423.81, 287,630.21 and 127,895.83

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Solution

The fourth proportional to 208,423.81, 287,630.21 and 127,895.83 is: 176,499.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,423.81 : 287,630.21 = 127,895.83 : x
  2. Step 2: Convert to fraction form
    208,423.81/287,630.21 = 127,895.83/x
  3. Step 3: Cross multiply
    208,423.81x = 287,630.21 × 127,895.83
  4. Step 4: Simplify right side
    208,423.81x = 36,786,704,441.02
  5. Step 5: Solve for x
    x = 36,786,704,441.02/208,423.81
  6. Step 6: Final answer
    x = 176,499.53

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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.