Home / 109,381.10-164,071.65-91,885.10

Finding the Fourth Proportional to 109,381.10, 164,071.65 and 91,885.10

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Solution

The fourth proportional to 109,381.10, 164,071.65 and 91,885.10 is: 137,827.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,381.10 : 164,071.65 = 91,885.10 : x
  2. Step 2: Convert to fraction form
    109,381.10/164,071.65 = 91,885.10/x
  3. Step 3: Cross multiply
    109,381.10x = 164,071.65 × 91,885.10
  4. Step 4: Simplify right side
    109,381.10x = 15,075,739,967.42
  5. Step 5: Solve for x
    x = 15,075,739,967.42/109,381.10
  6. Step 6: Final answer
    x = 137,827.65

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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.