Home / 103,111.84-154,686.12-53,178.45

Finding the Fourth Proportional to 103,111.84, 154,686.12 and 53,178.45

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Solution

The fourth proportional to 103,111.84, 154,686.12 and 53,178.45 is: 79,777.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,111.84 : 154,686.12 = 53,178.45 : x
  2. Step 2: Convert to fraction form
    103,111.84/154,686.12 = 53,178.45/x
  3. Step 3: Cross multiply
    103,111.84x = 154,686.12 × 53,178.45
  4. Step 4: Simplify right side
    103,111.84x = 8,225,968,098.11
  5. Step 5: Solve for x
    x = 8,225,968,098.11/103,111.84
  6. Step 6: Final answer
    x = 79,777.14

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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.