Home / 156,858.02-216,459.70-85,235.66

Finding the Fourth Proportional to 156,858.02, 216,459.70 and 85,235.66

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Solution

The fourth proportional to 156,858.02, 216,459.70 and 85,235.66 is: 117,622.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,858.02 : 216,459.70 = 85,235.66 : x
  2. Step 2: Convert to fraction form
    156,858.02/216,459.70 = 85,235.66/x
  3. Step 3: Cross multiply
    156,858.02x = 216,459.70 × 85,235.66
  4. Step 4: Simplify right side
    156,858.02x = 18,450,084,097.51
  5. Step 5: Solve for x
    x = 18,450,084,097.51/156,858.02
  6. Step 6: Final answer
    x = 117,622.83

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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.