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Finding the Fourth Proportional to 117,653.58, 162,279.84 and 77,354.46

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Solution

The fourth proportional to 117,653.58, 162,279.84 and 77,354.46 is: 106,695.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,653.58 : 162,279.84 = 77,354.46 : x
  2. Step 2: Convert to fraction form
    117,653.58/162,279.84 = 77,354.46/x
  3. Step 3: Cross multiply
    117,653.58x = 162,279.84 × 77,354.46
  4. Step 4: Simplify right side
    117,653.58x = 12,553,069,392.09
  5. Step 5: Solve for x
    x = 12,553,069,392.09/117,653.58
  6. Step 6: Final answer
    x = 106,695.18

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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.