Home / 156,361,981.72-215,779,450.90-85,798,055.24

Finding the Fourth Proportional to 156,361,981.72, 215,779,450.90 and 85,798,055.24

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Solution

The fourth proportional to 156,361,981.72, 215,779,450.90 and 85,798,055.24 is: 118,401,270.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,361,981.72 : 215,779,450.90 = 85,798,055.24 : x
  2. Step 2: Convert to fraction form
    156,361,981.72/215,779,450.90 = 85,798,055.24/x
  3. Step 3: Cross multiply
    156,361,981.72x = 215,779,450.90 × 85,798,055.24
  4. Step 4: Simplify right side
    156,361,981.72x = 18,513,457,247,975,068
  5. Step 5: Solve for x
    x = 18,513,457,247,975,068/156,361,981.72
  6. Step 6: Final answer
    x = 118,401,270.21

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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.