Home / 156,070,485.12-215,374,451.04-86,455,650.72

Finding the Fourth Proportional to 156,070,485.12, 215,374,451.04 and 86,455,650.72

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Solution

The fourth proportional to 156,070,485.12, 215,374,451.04 and 86,455,650.72 is: 119,307,236.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,070,485.12 : 215,374,451.04 = 86,455,650.72 : x
  2. Step 2: Convert to fraction form
    156,070,485.12/215,374,451.04 = 86,455,650.72/x
  3. Step 3: Cross multiply
    156,070,485.12x = 215,374,451.04 × 86,455,650.72
  4. Step 4: Simplify right side
    156,070,485.12x = 18,620,338,313,125,980
  5. Step 5: Solve for x
    x = 18,620,338,313,125,980/156,070,485.12
  6. Step 6: Final answer
    x = 119,307,236.72

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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.