Home / 84,740.10-127,142.55-83,411.70

Finding the Fourth Proportional to 84,740.10, 127,142.55 and 83,411.70

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Solution

The fourth proportional to 84,740.10, 127,142.55 and 83,411.70 is: 125,149.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,740.10 : 127,142.55 = 83,411.70 : x
  2. Step 2: Convert to fraction form
    84,740.10/127,142.55 = 83,411.70/x
  3. Step 3: Cross multiply
    84,740.10x = 127,142.55 × 83,411.70
  4. Step 4: Simplify right side
    84,740.10x = 10,605,176,237.84
  5. Step 5: Solve for x
    x = 10,605,176,237.84/84,740.10
  6. Step 6: Final answer
    x = 125,149.44

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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.