Home / 103,940.20-143,437.49-56,193.53

Finding the Fourth Proportional to 103,940.20, 143,437.49 and 56,193.53

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Solution

The fourth proportional to 103,940.20, 143,437.49 and 56,193.53 is: 77,547.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,940.20 : 143,437.49 = 56,193.53 : x
  2. Step 2: Convert to fraction form
    103,940.20/143,437.49 = 56,193.53/x
  3. Step 3: Cross multiply
    103,940.20x = 143,437.49 × 56,193.53
  4. Step 4: Simplify right side
    103,940.20x = 8,060,258,975.07
  5. Step 5: Solve for x
    x = 8,060,258,975.07/103,940.20
  6. Step 6: Final answer
    x = 77,547.08

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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.