Home / 156,830.20-216,427.02-85,210.36

Finding the Fourth Proportional to 156,830.20, 216,427.02 and 85,210.36

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Solution

The fourth proportional to 156,830.20, 216,427.02 and 85,210.36 is: 117,591.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,830.20 : 216,427.02 = 85,210.36 : x
  2. Step 2: Convert to fraction form
    156,830.20/216,427.02 = 85,210.36/x
  3. Step 3: Cross multiply
    156,830.20x = 216,427.02 × 85,210.36
  4. Step 4: Simplify right side
    156,830.20x = 18,441,824,287.93
  5. Step 5: Solve for x
    x = 18,441,824,287.93/156,830.20
  6. Step 6: Final answer
    x = 117,591.03

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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.