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Finding the Fourth Proportional to 118,021.70, 176,600.55 and 86,917.70

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Solution

The fourth proportional to 118,021.70, 176,600.55 and 86,917.70 is: 130,058.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,021.70 : 176,600.55 = 86,917.70 : x
  2. Step 2: Convert to fraction form
    118,021.70/176,600.55 = 86,917.70/x
  3. Step 3: Cross multiply
    118,021.70x = 176,600.55 × 86,917.70
  4. Step 4: Simplify right side
    118,021.70x = 15,349,713,624.74
  5. Step 5: Solve for x
    x = 15,349,713,624.74/118,021.70
  6. Step 6: Final answer
    x = 130,058.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.