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Finding the Fourth Proportional to 145,405.46, 218,108.23 and 45,573.39

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Solution

The fourth proportional to 145,405.46, 218,108.23 and 45,573.39 is: 68,360.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,405.46 : 218,108.23 = 45,573.39 : x
  2. Step 2: Convert to fraction form
    145,405.46/218,108.23 = 45,573.39/x
  3. Step 3: Cross multiply
    145,405.46x = 218,108.23 × 45,573.39
  4. Step 4: Simplify right side
    145,405.46x = 9,939,931,314.07
  5. Step 5: Solve for x
    x = 9,939,931,314.07/145,405.46
  6. Step 6: Final answer
    x = 68,360.10

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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.