Home / 156,970.15-216,619.28-85,350.45

Finding the Fourth Proportional to 156,970.15, 216,619.28 and 85,350.45

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Solution

The fourth proportional to 156,970.15, 216,619.28 and 85,350.45 is: 117,783.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,970.15 : 216,619.28 = 85,350.45 : x
  2. Step 2: Convert to fraction form
    156,970.15/216,619.28 = 85,350.45/x
  3. Step 3: Cross multiply
    156,970.15x = 216,619.28 × 85,350.45
  4. Step 4: Simplify right side
    156,970.15x = 18,488,553,026.68
  5. Step 5: Solve for x
    x = 18,488,553,026.68/156,970.15
  6. Step 6: Final answer
    x = 117,783.88

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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.