Home / 151,503.20-209,065.02-83,520.77

Finding the Fourth Proportional to 151,503.20, 209,065.02 and 83,520.77

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Solution

The fourth proportional to 151,503.20, 209,065.02 and 83,520.77 is: 115,253.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,503.20 : 209,065.02 = 83,520.77 : x
  2. Step 2: Convert to fraction form
    151,503.20/209,065.02 = 83,520.77/x
  3. Step 3: Cross multiply
    151,503.20x = 209,065.02 × 83,520.77
  4. Step 4: Simplify right side
    151,503.20x = 17,461,271,450.47
  5. Step 5: Solve for x
    x = 17,461,271,450.47/151,503.20
  6. Step 6: Final answer
    x = 115,253.48

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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.