Home / 141,938.40-212,666.54-85,660.22

Finding the Fourth Proportional to 141,938.40, 212,666.54 and 85,660.22

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Solution

The fourth proportional to 141,938.40, 212,666.54 and 85,660.22 is: 128,344.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,938.40 : 212,666.54 = 85,660.22 : x
  2. Step 2: Convert to fraction form
    141,938.40/212,666.54 = 85,660.22/x
  3. Step 3: Cross multiply
    141,938.40x = 212,666.54 × 85,660.22
  4. Step 4: Simplify right side
    141,938.40x = 18,217,062,603.04
  5. Step 5: Solve for x
    x = 18,217,062,603.04/141,938.40
  6. Step 6: Final answer
    x = 128,344.85

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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.