Home / 131,021.60-180,817.23-99,135.14

Finding the Fourth Proportional to 131,021.60, 180,817.23 and 99,135.14

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Solution

The fourth proportional to 131,021.60, 180,817.23 and 99,135.14 is: 136,812.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,021.60 : 180,817.23 = 99,135.14 : x
  2. Step 2: Convert to fraction form
    131,021.60/180,817.23 = 99,135.14/x
  3. Step 3: Cross multiply
    131,021.60x = 180,817.23 × 99,135.14
  4. Step 4: Simplify right side
    131,021.60x = 17,925,341,410.46
  5. Step 5: Solve for x
    x = 17,925,341,410.46/131,021.60
  6. Step 6: Final answer
    x = 136,812.11

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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.