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Finding the Fourth Proportional to 103,703.94, 155,521.32 and 40,507.68

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Solution

The fourth proportional to 103,703.94, 155,521.32 and 40,507.68 is: 60,748.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,703.94 : 155,521.32 = 40,507.68 : x
  2. Step 2: Convert to fraction form
    103,703.94/155,521.32 = 40,507.68/x
  3. Step 3: Cross multiply
    103,703.94x = 155,521.32 × 40,507.68
  4. Step 4: Simplify right side
    103,703.94x = 6,299,807,863.74
  5. Step 5: Solve for x
    x = 6,299,807,863.74/103,703.94
  6. Step 6: Final answer
    x = 60,748.01

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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.