Home / 138,807.45-191,554.07-75,145.23

Finding the Fourth Proportional to 138,807.45, 191,554.07 and 75,145.23

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Solution

The fourth proportional to 138,807.45, 191,554.07 and 75,145.23 is: 103,700.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,807.45 : 191,554.07 = 75,145.23 : x
  2. Step 2: Convert to fraction form
    138,807.45/191,554.07 = 75,145.23/x
  3. Step 3: Cross multiply
    138,807.45x = 191,554.07 × 75,145.23
  4. Step 4: Simplify right side
    138,807.45x = 14,394,374,271.86
  5. Step 5: Solve for x
    x = 14,394,374,271.86/138,807.45
  6. Step 6: Final answer
    x = 103,700.30

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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.