Home / 99,678.36-137,525.73-56,654.61

Finding the Fourth Proportional to 99,678.36, 137,525.73 and 56,654.61

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Solution

The fourth proportional to 99,678.36, 137,525.73 and 56,654.61 is: 78,166.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,678.36 : 137,525.73 = 56,654.61 : x
  2. Step 2: Convert to fraction form
    99,678.36/137,525.73 = 56,654.61/x
  3. Step 3: Cross multiply
    99,678.36x = 137,525.73 × 56,654.61
  4. Step 4: Simplify right side
    99,678.36x = 7,791,466,598.12
  5. Step 5: Solve for x
    x = 7,791,466,598.12/99,678.36
  6. Step 6: Final answer
    x = 78,166.08

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.