Home / 138,528.24-191,123.96-84,757.20

Finding the Fourth Proportional to 138,528.24, 191,123.96 and 84,757.20

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Solution

The fourth proportional to 138,528.24, 191,123.96 and 84,757.20 is: 116,937.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,528.24 : 191,123.96 = 84,757.20 : x
  2. Step 2: Convert to fraction form
    138,528.24/191,123.96 = 84,757.20/x
  3. Step 3: Cross multiply
    138,528.24x = 191,123.96 × 84,757.20
  4. Step 4: Simplify right side
    138,528.24x = 16,199,131,702.51
  5. Step 5: Solve for x
    x = 16,199,131,702.51/138,528.24
  6. Step 6: Final answer
    x = 116,937.40

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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.