Home / 178,830.48-268,089.84-90,009.12

Finding the Fourth Proportional to 178,830.48, 268,089.84 and 90,009.12

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Solution

The fourth proportional to 178,830.48, 268,089.84 and 90,009.12 is: 134,935.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,830.48 : 268,089.84 = 90,009.12 : x
  2. Step 2: Convert to fraction form
    178,830.48/268,089.84 = 90,009.12/x
  3. Step 3: Cross multiply
    178,830.48x = 268,089.84 × 90,009.12
  4. Step 4: Simplify right side
    178,830.48x = 24,130,530,579.34
  5. Step 5: Solve for x
    x = 24,130,530,579.34/178,830.48
  6. Step 6: Final answer
    x = 134,935.22

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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.