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Finding the Fourth Proportional to 145,975.77, 201,446.55 and 78,907.77

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Solution

The fourth proportional to 145,975.77, 201,446.55 and 78,907.77 is: 108,892.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,975.77 : 201,446.55 = 78,907.77 : x
  2. Step 2: Convert to fraction form
    145,975.77/201,446.55 = 78,907.77/x
  3. Step 3: Cross multiply
    145,975.77x = 201,446.55 × 78,907.77
  4. Step 4: Simplify right side
    145,975.77x = 15,895,698,034.69
  5. Step 5: Solve for x
    x = 15,895,698,034.69/145,975.77
  6. Step 6: Final answer
    x = 108,892.72

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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.