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Finding the Fourth Proportional to 125,315.58, 187,980.93 and 50,435.40

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Solution

The fourth proportional to 125,315.58, 187,980.93 and 50,435.40 is: 75,656.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,315.58 : 187,980.93 = 50,435.40 : x
  2. Step 2: Convert to fraction form
    125,315.58/187,980.93 = 50,435.40/x
  3. Step 3: Cross multiply
    125,315.58x = 187,980.93 × 50,435.40
  4. Step 4: Simplify right side
    125,315.58x = 9,480,893,396.92
  5. Step 5: Solve for x
    x = 9,480,893,396.92/125,315.58
  6. Step 6: Final answer
    x = 75,656.14

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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.