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Finding the Fourth Proportional to 150,973.72, 208,343.74 and 87,315.62

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Solution

The fourth proportional to 150,973.72, 208,343.74 and 87,315.62 is: 120,495.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,973.72 : 208,343.74 = 87,315.62 : x
  2. Step 2: Convert to fraction form
    150,973.72/208,343.74 = 87,315.62/x
  3. Step 3: Cross multiply
    150,973.72x = 208,343.74 × 87,315.62
  4. Step 4: Simplify right side
    150,973.72x = 18,191,662,831.22
  5. Step 5: Solve for x
    x = 18,191,662,831.22/150,973.72
  6. Step 6: Final answer
    x = 120,495.56

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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.