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Finding the Fourth Proportional to 145,374.68, 218,019.90 and 56,608.40

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Solution

The fourth proportional to 145,374.68, 218,019.90 and 56,608.40 is: 84,896.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,374.68 : 218,019.90 = 56,608.40 : x
  2. Step 2: Convert to fraction form
    145,374.68/218,019.90 = 56,608.40/x
  3. Step 3: Cross multiply
    145,374.68x = 218,019.90 × 56,608.40
  4. Step 4: Simplify right side
    145,374.68x = 12,341,757,707.16
  5. Step 5: Solve for x
    x = 12,341,757,707.16/145,374.68
  6. Step 6: Final answer
    x = 84,896.20

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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.