Home / 117,725.16-162,507.78-72,421.56

Finding the Fourth Proportional to 117,725.16, 162,507.78 and 72,421.56

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Solution

The fourth proportional to 117,725.16, 162,507.78 and 72,421.56 is: 99,970.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,725.16 : 162,507.78 = 72,421.56 : x
  2. Step 2: Convert to fraction form
    117,725.16/162,507.78 = 72,421.56/x
  3. Step 3: Cross multiply
    117,725.16x = 162,507.78 × 72,421.56
  4. Step 4: Simplify right side
    117,725.16x = 11,769,066,939.74
  5. Step 5: Solve for x
    x = 11,769,066,939.74/117,725.16
  6. Step 6: Final answer
    x = 99,970.70

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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.