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Finding the Fourth Proportional to 145,376.54, 218,064.86 and 59,986.15

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Solution

The fourth proportional to 145,376.54, 218,064.86 and 59,986.15 is: 89,979.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,376.54 : 218,064.86 = 59,986.15 : x
  2. Step 2: Convert to fraction form
    145,376.54/218,064.86 = 59,986.15/x
  3. Step 3: Cross multiply
    145,376.54x = 218,064.86 × 59,986.15
  4. Step 4: Simplify right side
    145,376.54x = 13,080,872,192.93
  5. Step 5: Solve for x
    x = 13,080,872,192.93/145,376.54
  6. Step 6: Final answer
    x = 89,979.25

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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.