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Finding the Fourth Proportional to 134,597.56, 185,742.30 and 78,014.20

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Solution

The fourth proportional to 134,597.56, 185,742.30 and 78,014.20 is: 107,658.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,597.56 : 185,742.30 = 78,014.20 : x
  2. Step 2: Convert to fraction form
    134,597.56/185,742.30 = 78,014.20/x
  3. Step 3: Cross multiply
    134,597.56x = 185,742.30 × 78,014.20
  4. Step 4: Simplify right side
    134,597.56x = 14,490,536,940.66
  5. Step 5: Solve for x
    x = 14,490,536,940.66/134,597.56
  6. Step 6: Final answer
    x = 107,658.24

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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.