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Finding the Fourth Proportional to 158,632.48, 218,914.14 and 87,011.92

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Solution

The fourth proportional to 158,632.48, 218,914.14 and 87,011.92 is: 120,077.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,632.48 : 218,914.14 = 87,011.92 : x
  2. Step 2: Convert to fraction form
    158,632.48/218,914.14 = 87,011.92/x
  3. Step 3: Cross multiply
    158,632.48x = 218,914.14 × 87,011.92
  4. Step 4: Simplify right side
    158,632.48x = 19,048,139,636.55
  5. Step 5: Solve for x
    x = 19,048,139,636.55/158,632.48
  6. Step 6: Final answer
    x = 120,077.17

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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.