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Finding the Fourth Proportional to 110,129.64, 151,978.50 and 62,378.28

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Solution

The fourth proportional to 110,129.64, 151,978.50 and 62,378.28 is: 86,081.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,129.64 : 151,978.50 = 62,378.28 : x
  2. Step 2: Convert to fraction form
    110,129.64/151,978.50 = 62,378.28/x
  3. Step 3: Cross multiply
    110,129.64x = 151,978.50 × 62,378.28
  4. Step 4: Simplify right side
    110,129.64x = 9,480,157,426.98
  5. Step 5: Solve for x
    x = 9,480,157,426.98/110,129.64
  6. Step 6: Final answer
    x = 86,081.80

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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.