Home / 103,940.39-143,437.75-56,193.72

Finding the Fourth Proportional to 103,940.39, 143,437.75 and 56,193.72

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Solution

The fourth proportional to 103,940.39, 143,437.75 and 56,193.72 is: 77,547.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,940.39 : 143,437.75 = 56,193.72 : x
  2. Step 2: Convert to fraction form
    103,940.39/143,437.75 = 56,193.72/x
  3. Step 3: Cross multiply
    103,940.39x = 143,437.75 × 56,193.72
  4. Step 4: Simplify right side
    103,940.39x = 8,060,300,620.45
  5. Step 5: Solve for x
    x = 8,060,300,620.45/103,940.39
  6. Step 6: Final answer
    x = 77,547.34

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1.5x scale

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.