Home / 140,070.90-193,313.97-77,987.64

Finding the Fourth Proportional to 140,070.90, 193,313.97 and 77,987.64

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Solution

The fourth proportional to 140,070.90, 193,313.97 and 77,987.64 is: 107,631.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,070.90 : 193,313.97 = 77,987.64 : x
  2. Step 2: Convert to fraction form
    140,070.90/193,313.97 = 77,987.64/x
  3. Step 3: Cross multiply
    140,070.90x = 193,313.97 × 77,987.64
  4. Step 4: Simplify right side
    140,070.90x = 15,076,100,299.33
  5. Step 5: Solve for x
    x = 15,076,100,299.33/140,070.90
  6. Step 6: Final answer
    x = 107,631.92

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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.