Home / 156,070,253.76-215,374,128-86,455,418.88

Finding the Fourth Proportional to 156,070,253.76, 215,374,128 and 86,455,418.88

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Solution

The fourth proportional to 156,070,253.76, 215,374,128 and 86,455,418.88 is: 119,306,914.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,070,253.76 : 215,374,128 = 86,455,418.88 : x
  2. Step 2: Convert to fraction form
    156,070,253.76/215,374,128 = 86,455,418.88/x
  3. Step 3: Cross multiply
    156,070,253.76x = 215,374,128 × 86,455,418.88
  4. Step 4: Simplify right side
    156,070,253.76x = 18,620,260,452,154,736
  5. Step 5: Solve for x
    x = 18,620,260,452,154,736/156,070,253.76
  6. Step 6: Final answer
    x = 119,306,914.70

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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.