Home / 156,637.28-216,153.65-85,015.76

Finding the Fourth Proportional to 156,637.28, 216,153.65 and 85,015.76

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Solution

The fourth proportional to 156,637.28, 216,153.65 and 85,015.76 is: 117,318.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,637.28 : 216,153.65 = 85,015.76 : x
  2. Step 2: Convert to fraction form
    156,637.28/216,153.65 = 85,015.76/x
  3. Step 3: Cross multiply
    156,637.28x = 216,153.65 × 85,015.76
  4. Step 4: Simplify right side
    156,637.28x = 18,376,466,406.45
  5. Step 5: Solve for x
    x = 18,376,466,406.45/156,637.28
  6. Step 6: Final answer
    x = 117,318.60

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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.