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Finding the Fourth Proportional to 117,686.60, 176,376.30 and 84,816.20

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Solution

The fourth proportional to 117,686.60, 176,376.30 and 84,816.20 is: 127,113.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,686.60 : 176,376.30 = 84,816.20 : x
  2. Step 2: Convert to fraction form
    117,686.60/176,376.30 = 84,816.20/x
  3. Step 3: Cross multiply
    117,686.60x = 176,376.30 × 84,816.20
  4. Step 4: Simplify right side
    117,686.60x = 14,959,567,536.06
  5. Step 5: Solve for x
    x = 14,959,567,536.06/117,686.60
  6. Step 6: Final answer
    x = 127,113.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.