Home / 103,823.78-143,276.85-56,077.11

Finding the Fourth Proportional to 103,823.78, 143,276.85 and 56,077.11

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Solution

The fourth proportional to 103,823.78, 143,276.85 and 56,077.11 is: 77,386.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,823.78 : 143,276.85 = 56,077.11 : x
  2. Step 2: Convert to fraction form
    103,823.78/143,276.85 = 56,077.11/x
  3. Step 3: Cross multiply
    103,823.78x = 143,276.85 × 56,077.11
  4. Step 4: Simplify right side
    103,823.78x = 8,034,551,677.90
  5. Step 5: Solve for x
    x = 8,034,551,677.90/103,823.78
  6. Step 6: Final answer
    x = 77,386.43

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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.