Home / 131,518.95-197,181.23-72,421.35

Finding the Fourth Proportional to 131,518.95, 197,181.23 and 72,421.35

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Solution

The fourth proportional to 131,518.95, 197,181.23 and 72,421.35 is: 108,578.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,518.95 : 197,181.23 = 72,421.35 : x
  2. Step 2: Convert to fraction form
    131,518.95/197,181.23 = 72,421.35/x
  3. Step 3: Cross multiply
    131,518.95x = 197,181.23 × 72,421.35
  4. Step 4: Simplify right side
    131,518.95x = 14,280,130,509.15
  5. Step 5: Solve for x
    x = 14,280,130,509.15/131,518.95
  6. Step 6: Final answer
    x = 108,578.50

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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.