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Finding the Fourth Proportional to 125,113.44, 187,199.31 and 87,746.45

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Solution

The fourth proportional to 125,113.44, 187,199.31 and 87,746.45 is: 131,289.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,113.44 : 187,199.31 = 87,746.45 : x
  2. Step 2: Convert to fraction form
    125,113.44/187,199.31 = 87,746.45/x
  3. Step 3: Cross multiply
    125,113.44x = 187,199.31 × 87,746.45
  4. Step 4: Simplify right side
    125,113.44x = 16,426,074,894.95
  5. Step 5: Solve for x
    x = 16,426,074,894.95/125,113.44
  6. Step 6: Final answer
    x = 131,289.45

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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.