Home / 150,821.18-208,204.09-87,146.66

Finding the Fourth Proportional to 150,821.18, 208,204.09 and 87,146.66

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Solution

The fourth proportional to 150,821.18, 208,204.09 and 87,146.66 is: 120,303.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,821.18 : 208,204.09 = 87,146.66 : x
  2. Step 2: Convert to fraction form
    150,821.18/208,204.09 = 87,146.66/x
  3. Step 3: Cross multiply
    150,821.18x = 208,204.09 × 87,146.66
  4. Step 4: Simplify right side
    150,821.18x = 18,144,291,041.84
  5. Step 5: Solve for x
    x = 18,144,291,041.84/150,821.18
  6. Step 6: Final answer
    x = 120,303.34

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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.