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Finding the Fourth Proportional to 145,377.05, 218,065.61 and 59,986.66

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Solution

The fourth proportional to 145,377.05, 218,065.61 and 59,986.66 is: 89,980.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,377.05 : 218,065.61 = 59,986.66 : x
  2. Step 2: Convert to fraction form
    145,377.05/218,065.61 = 59,986.66/x
  3. Step 3: Cross multiply
    145,377.05x = 218,065.61 × 59,986.66
  4. Step 4: Simplify right side
    145,377.05x = 13,081,026,514.43
  5. Step 5: Solve for x
    x = 13,081,026,514.43/145,377.05
  6. Step 6: Final answer
    x = 89,980.00

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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.