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Finding the Fourth Proportional to 208,155.52, 287,259.87 and 127,627.45

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Solution

The fourth proportional to 208,155.52, 287,259.87 and 127,627.45 is: 176,129.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,155.52 : 287,259.87 = 127,627.45 : x
  2. Step 2: Convert to fraction form
    208,155.52/287,259.87 = 127,627.45/x
  3. Step 3: Cross multiply
    208,155.52x = 287,259.87 × 127,627.45
  4. Step 4: Simplify right side
    208,155.52x = 36,662,243,737.98
  5. Step 5: Solve for x
    x = 36,662,243,737.98/208,155.52
  6. Step 6: Final answer
    x = 176,129.10

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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.