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Finding the Fourth Proportional to 139,106.70, 191,967.47 and 75,444.55

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Solution

The fourth proportional to 139,106.70, 191,967.47 and 75,444.55 is: 104,113.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,106.70 : 191,967.47 = 75,444.55 : x
  2. Step 2: Convert to fraction form
    139,106.70/191,967.47 = 75,444.55/x
  3. Step 3: Cross multiply
    139,106.70x = 191,967.47 × 75,444.55
  4. Step 4: Simplify right side
    139,106.70x = 14,482,898,814.56
  5. Step 5: Solve for x
    x = 14,482,898,814.56/139,106.70
  6. Step 6: Final answer
    x = 104,113.60

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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.