Home / 102,126.35-140,932.33-56,803.35

Finding the Fourth Proportional to 102,126.35, 140,932.33 and 56,803.35

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Solution

The fourth proportional to 102,126.35, 140,932.33 and 56,803.35 is: 78,387.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,126.35 : 140,932.33 = 56,803.35 : x
  2. Step 2: Convert to fraction form
    102,126.35/140,932.33 = 56,803.35/x
  3. Step 3: Cross multiply
    102,126.35x = 140,932.33 × 56,803.35
  4. Step 4: Simplify right side
    102,126.35x = 8,005,429,173.31
  5. Step 5: Solve for x
    x = 8,005,429,173.31/102,126.35
  6. Step 6: Final answer
    x = 78,387.50

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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.