Home / 156,965.90-216,607.02-85,343.45

Finding the Fourth Proportional to 156,965.90, 216,607.02 and 85,343.45

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Solution

The fourth proportional to 156,965.90, 216,607.02 and 85,343.45 is: 117,770.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,965.90 : 216,607.02 = 85,343.45 : x
  2. Step 2: Convert to fraction form
    156,965.90/216,607.02 = 85,343.45/x
  3. Step 3: Cross multiply
    156,965.90x = 216,607.02 × 85,343.45
  4. Step 4: Simplify right side
    156,965.90x = 18,485,990,381.02
  5. Step 5: Solve for x
    x = 18,485,990,381.02/156,965.90
  6. Step 6: Final answer
    x = 117,770.74

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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.