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Finding the Fourth Proportional to 145,907.93, 201,352.94 and 78,839.93

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Solution

The fourth proportional to 145,907.93, 201,352.94 and 78,839.93 is: 108,799.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,907.93 : 201,352.94 = 78,839.93 : x
  2. Step 2: Convert to fraction form
    145,907.93/201,352.94 = 78,839.93/x
  3. Step 3: Cross multiply
    145,907.93x = 201,352.94 × 78,839.93
  4. Step 4: Simplify right side
    145,907.93x = 15,874,651,497.79
  5. Step 5: Solve for x
    x = 15,874,651,497.79/145,907.93
  6. Step 6: Final answer
    x = 108,799.10

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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.