Home / 156,176,674.34-215,520,727.77-85,612,436.55

Finding the Fourth Proportional to 156,176,674.34, 215,520,727.77 and 85,612,436.55

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Solution

The fourth proportional to 156,176,674.34, 215,520,727.77 and 85,612,436.55 is: 118,143,472.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,176,674.34 : 215,520,727.77 = 85,612,436.55 : x
  2. Step 2: Convert to fraction form
    156,176,674.34/215,520,727.77 = 85,612,436.55/x
  3. Step 3: Cross multiply
    156,176,674.34x = 215,520,727.77 × 85,612,436.55
  4. Step 4: Simplify right side
    156,176,674.34x = 18,451,254,631,418,948
  5. Step 5: Solve for x
    x = 18,451,254,631,418,948/156,176,674.34
  6. Step 6: Final answer
    x = 118,143,472.51

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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.