Home / 156,838.57-216,438.54-85,218.59

Finding the Fourth Proportional to 156,838.57, 216,438.54 and 85,218.59

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Solution

The fourth proportional to 156,838.57, 216,438.54 and 85,218.59 is: 117,602.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,838.57 : 216,438.54 = 85,218.59 : x
  2. Step 2: Convert to fraction form
    156,838.57/216,438.54 = 85,218.59/x
  3. Step 3: Cross multiply
    156,838.57x = 216,438.54 × 85,218.59
  4. Step 4: Simplify right side
    156,838.57x = 18,444,587,200.46
  5. Step 5: Solve for x
    x = 18,444,587,200.46/156,838.57
  6. Step 6: Final answer
    x = 117,602.37

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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.