Home / 115,242,561.71-158,934,228.35-81,685,667.01

Finding the Fourth Proportional to 115,242,561.71, 158,934,228.35 and 81,685,667.01

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Solution

The fourth proportional to 115,242,561.71, 158,934,228.35 and 81,685,667.01 is: 112,654,979.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,242,561.71 : 158,934,228.35 = 81,685,667.01 : x
  2. Step 2: Convert to fraction form
    115,242,561.71/158,934,228.35 = 81,685,667.01/x
  3. Step 3: Cross multiply
    115,242,561.71x = 158,934,228.35 × 81,685,667.01
  4. Step 4: Simplify right side
    115,242,561.71x = 12,982,648,453,080,974
  5. Step 5: Solve for x
    x = 12,982,648,453,080,974/115,242,561.71
  6. Step 6: Final answer
    x = 112,654,979.73

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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.