Home / 128,248.02-191,890.89-106,071.84

Finding the Fourth Proportional to 128,248.02, 191,890.89 and 106,071.84

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Solution

The fourth proportional to 128,248.02, 191,890.89 and 106,071.84 is: 158,709.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,248.02 : 191,890.89 = 106,071.84 : x
  2. Step 2: Convert to fraction form
    128,248.02/191,890.89 = 106,071.84/x
  3. Step 3: Cross multiply
    128,248.02x = 191,890.89 × 106,071.84
  4. Step 4: Simplify right side
    128,248.02x = 20,354,219,781.54
  5. Step 5: Solve for x
    x = 20,354,219,781.54/128,248.02
  6. Step 6: Final answer
    x = 158,709.82

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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.