Home / 146,142.40-201,656.28-81,603.76

Finding the Fourth Proportional to 146,142.40, 201,656.28 and 81,603.76

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Solution

The fourth proportional to 146,142.40, 201,656.28 and 81,603.76 is: 112,601.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,142.40 : 201,656.28 = 81,603.76 : x
  2. Step 2: Convert to fraction form
    146,142.40/201,656.28 = 81,603.76/x
  3. Step 3: Cross multiply
    146,142.40x = 201,656.28 × 81,603.76
  4. Step 4: Simplify right side
    146,142.40x = 16,455,910,675.61
  5. Step 5: Solve for x
    x = 16,455,910,675.61/146,142.40
  6. Step 6: Final answer
    x = 112,601.89

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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.