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Finding the Fourth Proportional to 208,139.98, 287,232.68 and 112,646.75

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Solution

The fourth proportional to 208,139.98, 287,232.68 and 112,646.75 is: 155,452.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,139.98 : 287,232.68 = 112,646.75 : x
  2. Step 2: Convert to fraction form
    208,139.98/287,232.68 = 112,646.75/x
  3. Step 3: Cross multiply
    208,139.98x = 287,232.68 × 112,646.75
  4. Step 4: Simplify right side
    208,139.98x = 32,355,828,356.93
  5. Step 5: Solve for x
    x = 32,355,828,356.93/208,139.98
  6. Step 6: Final answer
    x = 155,452.25

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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.