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Finding the Fourth Proportional to 145,674.40, 218,502.60 and 61,398.40

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Solution

The fourth proportional to 145,674.40, 218,502.60 and 61,398.40 is: 92,093.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,674.40 : 218,502.60 = 61,398.40 : x
  2. Step 2: Convert to fraction form
    145,674.40/218,502.60 = 61,398.40/x
  3. Step 3: Cross multiply
    145,674.40x = 218,502.60 × 61,398.40
  4. Step 4: Simplify right side
    145,674.40x = 13,415,710,035.84
  5. Step 5: Solve for x
    x = 13,415,710,035.84/145,674.40
  6. Step 6: Final answer
    x = 92,093.81

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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.