Home / 74,123.12-102,305.35-68,145.32

Finding the Fourth Proportional to 74,123.12, 102,305.35 and 68,145.32

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Solution

The fourth proportional to 74,123.12, 102,305.35 and 68,145.32 is: 94,054.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,123.12 : 102,305.35 = 68,145.32 : x
  2. Step 2: Convert to fraction form
    74,123.12/102,305.35 = 68,145.32/x
  3. Step 3: Cross multiply
    74,123.12x = 102,305.35 × 68,145.32
  4. Step 4: Simplify right side
    74,123.12x = 6,971,630,813.46
  5. Step 5: Solve for x
    x = 6,971,630,813.46/74,123.12
  6. Step 6: Final answer
    x = 94,054.74

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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.