Home / 138,505.44-191,095-84,734.40

Finding the Fourth Proportional to 138,505.44, 191,095 and 84,734.40

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Solution

The fourth proportional to 138,505.44, 191,095 and 84,734.40 is: 116,907.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,505.44 : 191,095 = 84,734.40 : x
  2. Step 2: Convert to fraction form
    138,505.44/191,095 = 84,734.40/x
  3. Step 3: Cross multiply
    138,505.44x = 191,095 × 84,734.40
  4. Step 4: Simplify right side
    138,505.44x = 16,192,320,168.00
  5. Step 5: Solve for x
    x = 16,192,320,168.00/138,505.44
  6. Step 6: Final answer
    x = 116,907.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.