Home / 131,477.10-197,215.65-72,428.10

Finding the Fourth Proportional to 131,477.10, 197,215.65 and 72,428.10

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Solution

The fourth proportional to 131,477.10, 197,215.65 and 72,428.10 is: 108,642.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,477.10 : 197,215.65 = 72,428.10 : x
  2. Step 2: Convert to fraction form
    131,477.10/197,215.65 = 72,428.10/x
  3. Step 3: Cross multiply
    131,477.10x = 197,215.65 × 72,428.10
  4. Step 4: Simplify right side
    131,477.10x = 14,283,954,819.77
  5. Step 5: Solve for x
    x = 14,283,954,819.77/131,477.10
  6. Step 6: Final answer
    x = 108,642.15

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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.