Home / 156,141.51-215,475.93-84,521.49

Finding the Fourth Proportional to 156,141.51, 215,475.93 and 84,521.49

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Solution

The fourth proportional to 156,141.51, 215,475.93 and 84,521.49 is: 116,640.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,141.51 : 215,475.93 = 84,521.49 : x
  2. Step 2: Convert to fraction form
    156,141.51/215,475.93 = 84,521.49/x
  3. Step 3: Cross multiply
    156,141.51x = 215,475.93 × 84,521.49
  4. Step 4: Simplify right side
    156,141.51x = 18,212,346,662.74
  5. Step 5: Solve for x
    x = 18,212,346,662.74/156,141.51
  6. Step 6: Final answer
    x = 116,640.01

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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.