Home / 191,808,090.40-287,712,135.60-115,217,600.80

Finding the Fourth Proportional to 191,808,090.40, 287,712,135.60 and 115,217,600.80

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Solution

The fourth proportional to 191,808,090.40, 287,712,135.60 and 115,217,600.80 is: 172,826,401.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,808,090.40 : 287,712,135.60 = 115,217,600.80 : x
  2. Step 2: Convert to fraction form
    191,808,090.40/287,712,135.60 = 115,217,600.80/x
  3. Step 3: Cross multiply
    191,808,090.40x = 287,712,135.60 × 115,217,600.80
  4. Step 4: Simplify right side
    191,808,090.40x = 33,149,501,984,876,272
  5. Step 5: Solve for x
    x = 33,149,501,984,876,272/191,808,090.40
  6. Step 6: Final answer
    x = 172,826,401.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.