Home / 156,658.43-216,192.55-85,038.45

Finding the Fourth Proportional to 156,658.43, 216,192.55 and 85,038.45

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Solution

The fourth proportional to 156,658.43, 216,192.55 and 85,038.45 is: 117,355.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,658.43 : 216,192.55 = 85,038.45 : x
  2. Step 2: Convert to fraction form
    156,658.43/216,192.55 = 85,038.45/x
  3. Step 3: Cross multiply
    156,658.43x = 216,192.55 × 85,038.45
  4. Step 4: Simplify right side
    156,658.43x = 18,384,679,459.85
  5. Step 5: Solve for x
    x = 18,384,679,459.85/156,658.43
  6. Step 6: Final answer
    x = 117,355.19

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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.