Home / 156,984.09-216,642.15-85,368.30

Finding the Fourth Proportional to 156,984.09, 216,642.15 and 85,368.30

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Solution

The fourth proportional to 156,984.09, 216,642.15 and 85,368.30 is: 117,810.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,984.09 : 216,642.15 = 85,368.30 : x
  2. Step 2: Convert to fraction form
    156,984.09/216,642.15 = 85,368.30/x
  3. Step 3: Cross multiply
    156,984.09x = 216,642.15 × 85,368.30
  4. Step 4: Simplify right side
    156,984.09x = 18,494,372,053.85
  5. Step 5: Solve for x
    x = 18,494,372,053.85/156,984.09
  6. Step 6: Final answer
    x = 117,810.49

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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.