Home / 86,988.06-120,285.18-69,051.96

Finding the Fourth Proportional to 86,988.06, 120,285.18 and 69,051.96

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Solution

The fourth proportional to 86,988.06, 120,285.18 and 69,051.96 is: 95,483.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,988.06 : 120,285.18 = 69,051.96 : x
  2. Step 2: Convert to fraction form
    86,988.06/120,285.18 = 69,051.96/x
  3. Step 3: Cross multiply
    86,988.06x = 120,285.18 × 69,051.96
  4. Step 4: Simplify right side
    86,988.06x = 8,305,927,437.95
  5. Step 5: Solve for x
    x = 8,305,927,437.95/86,988.06
  6. Step 6: Final answer
    x = 95,483.53

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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.