Home / 156,898,823.80-216,513,874.98-85,372,000.68

Finding the Fourth Proportional to 156,898,823.80, 216,513,874.98 and 85,372,000.68

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Solution

The fourth proportional to 156,898,823.80, 216,513,874.98 and 85,372,000.68 is: 117,809,823.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,898,823.80 : 216,513,874.98 = 85,372,000.68 : x
  2. Step 2: Convert to fraction form
    156,898,823.80/216,513,874.98 = 85,372,000.68/x
  3. Step 3: Cross multiply
    156,898,823.80x = 216,513,874.98 × 85,372,000.68
  4. Step 4: Simplify right side
    156,898,823.80x = 18,484,222,681,131,040
  5. Step 5: Solve for x
    x = 18,484,222,681,131,040/156,898,823.80
  6. Step 6: Final answer
    x = 117,809,823.13

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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.