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Finding the Fourth Proportional to 86,117.42, 118,900.03 and 77,014.54

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Solution

The fourth proportional to 86,117.42, 118,900.03 and 77,014.54 is: 106,331.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,117.42 : 118,900.03 = 77,014.54 : x
  2. Step 2: Convert to fraction form
    86,117.42/118,900.03 = 77,014.54/x
  3. Step 3: Cross multiply
    86,117.42x = 118,900.03 × 77,014.54
  4. Step 4: Simplify right side
    86,117.42x = 9,157,031,116.44
  5. Step 5: Solve for x
    x = 9,157,031,116.44/86,117.42
  6. Step 6: Final answer
    x = 106,331.93

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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.