Home / 102,820.19-141,885.97-56,877.09

Finding the Fourth Proportional to 102,820.19, 141,885.97 and 56,877.09

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Solution

The fourth proportional to 102,820.19, 141,885.97 and 56,877.09 is: 78,487.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,820.19 : 141,885.97 = 56,877.09 : x
  2. Step 2: Convert to fraction form
    102,820.19/141,885.97 = 56,877.09/x
  3. Step 3: Cross multiply
    102,820.19x = 141,885.97 × 56,877.09
  4. Step 4: Simplify right side
    102,820.19x = 8,070,061,156.52
  5. Step 5: Solve for x
    x = 8,070,061,156.52/102,820.19
  6. Step 6: Final answer
    x = 78,487.13

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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.