Home / 129,001.95-193,408.56-86,777.06

Finding the Fourth Proportional to 129,001.95, 193,408.56 and 86,777.06

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Solution

The fourth proportional to 129,001.95, 193,408.56 and 86,777.06 is: 130,102.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,001.95 : 193,408.56 = 86,777.06 : x
  2. Step 2: Convert to fraction form
    129,001.95/193,408.56 = 86,777.06/x
  3. Step 3: Cross multiply
    129,001.95x = 193,408.56 × 86,777.06
  4. Step 4: Simplify right side
    129,001.95x = 16,783,425,248.59
  5. Step 5: Solve for x
    x = 16,783,425,248.59/129,001.95
  6. Step 6: Final answer
    x = 130,102.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.