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Finding the Fourth Proportional to 145,673.36, 218,714.48 and 74,647.03

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Solution

The fourth proportional to 145,673.36, 218,714.48 and 74,647.03 is: 112,075.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,673.36 : 218,714.48 = 74,647.03 : x
  2. Step 2: Convert to fraction form
    145,673.36/218,714.48 = 74,647.03/x
  3. Step 3: Cross multiply
    145,673.36x = 218,714.48 × 74,647.03
  4. Step 4: Simplify right side
    145,673.36x = 16,326,386,250.15
  5. Step 5: Solve for x
    x = 16,326,386,250.15/145,673.36
  6. Step 6: Final answer
    x = 112,075.31

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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.