Home / 140,133.89-193,411.05-87,770.05

Finding the Fourth Proportional to 140,133.89, 193,411.05 and 87,770.05

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Solution

The fourth proportional to 140,133.89, 193,411.05 and 87,770.05 is: 121,139.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,133.89 : 193,411.05 = 87,770.05 : x
  2. Step 2: Convert to fraction form
    140,133.89/193,411.05 = 87,770.05/x
  3. Step 3: Cross multiply
    140,133.89x = 193,411.05 × 87,770.05
  4. Step 4: Simplify right side
    140,133.89x = 16,975,697,529.05
  5. Step 5: Solve for x
    x = 16,975,697,529.05/140,133.89
  6. Step 6: Final answer
    x = 121,139.13

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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.