Home / 121,985.30-182,837.55-47,072.32

Finding the Fourth Proportional to 121,985.30, 182,837.55 and 47,072.32

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Solution

The fourth proportional to 121,985.30, 182,837.55 and 47,072.32 is: 70,554.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,985.30 : 182,837.55 = 47,072.32 : x
  2. Step 2: Convert to fraction form
    121,985.30/182,837.55 = 47,072.32/x
  3. Step 3: Cross multiply
    121,985.30x = 182,837.55 × 47,072.32
  4. Step 4: Simplify right side
    121,985.30x = 8,606,587,381.04
  5. Step 5: Solve for x
    x = 8,606,587,381.04/121,985.30
  6. Step 6: Final answer
    x = 70,554.30

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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.