Home / 104,135.77-143,708.05-56,389.12

Finding the Fourth Proportional to 104,135.77, 143,708.05 and 56,389.12

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Solution

The fourth proportional to 104,135.77, 143,708.05 and 56,389.12 is: 77,817.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,135.77 : 143,708.05 = 56,389.12 : x
  2. Step 2: Convert to fraction form
    104,135.77/143,708.05 = 56,389.12/x
  3. Step 3: Cross multiply
    104,135.77x = 143,708.05 × 56,389.12
  4. Step 4: Simplify right side
    104,135.77x = 8,103,570,187.63
  5. Step 5: Solve for x
    x = 8,103,570,187.63/104,135.77
  6. Step 6: Final answer
    x = 77,817.35

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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.