Home / 156,931.68-216,569.52-85,315.62

Finding the Fourth Proportional to 156,931.68, 216,569.52 and 85,315.62

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Solution

The fourth proportional to 156,931.68, 216,569.52 and 85,315.62 is: 117,737.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,931.68 : 216,569.52 = 85,315.62 : x
  2. Step 2: Convert to fraction form
    156,931.68/216,569.52 = 85,315.62/x
  3. Step 3: Cross multiply
    156,931.68x = 216,569.52 × 85,315.62
  4. Step 4: Simplify right side
    156,931.68x = 18,476,762,871.90
  5. Step 5: Solve for x
    x = 18,476,762,871.90/156,931.68
  6. Step 6: Final answer
    x = 117,737.62

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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.