Home / 156,776.84-216,348.46-85,155.36

Finding the Fourth Proportional to 156,776.84, 216,348.46 and 85,155.36

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Solution

The fourth proportional to 156,776.84, 216,348.46 and 85,155.36 is: 117,512.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,776.84 : 216,348.46 = 85,155.36 : x
  2. Step 2: Convert to fraction form
    156,776.84/216,348.46 = 85,155.36/x
  3. Step 3: Cross multiply
    156,776.84x = 216,348.46 × 85,155.36
  4. Step 4: Simplify right side
    156,776.84x = 18,423,230,996.75
  5. Step 5: Solve for x
    x = 18,423,230,996.75/156,776.84
  6. Step 6: Final answer
    x = 117,512.45

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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.