Home / 156,970.28-216,615.93-85,349.68

Finding the Fourth Proportional to 156,970.28, 216,615.93 and 85,349.68

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Solution

The fourth proportional to 156,970.28, 216,615.93 and 85,349.68 is: 117,780.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,970.28 : 216,615.93 = 85,349.68 : x
  2. Step 2: Convert to fraction form
    156,970.28/216,615.93 = 85,349.68/x
  3. Step 3: Cross multiply
    156,970.28x = 216,615.93 × 85,349.68
  4. Step 4: Simplify right side
    156,970.28x = 18,488,100,308.40
  5. Step 5: Solve for x
    x = 18,488,100,308.40/156,970.28
  6. Step 6: Final answer
    x = 117,780.90

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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.