Home / 140,123.70-193,315.16-86,315.40

Finding the Fourth Proportional to 140,123.70, 193,315.16 and 86,315.40

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Solution

The fourth proportional to 140,123.70, 193,315.16 and 86,315.40 is: 119,081.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,123.70 : 193,315.16 = 86,315.40 : x
  2. Step 2: Convert to fraction form
    140,123.70/193,315.16 = 86,315.40/x
  3. Step 3: Cross multiply
    140,123.70x = 193,315.16 × 86,315.40
  4. Step 4: Simplify right side
    140,123.70x = 16,686,075,361.46
  5. Step 5: Solve for x
    x = 16,686,075,361.46/140,123.70
  6. Step 6: Final answer
    x = 119,081.04

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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.