Home / 96,775,809.60-145,163,714.40-85,438,401.60

Finding the Fourth Proportional to 96,775,809.60, 145,163,714.40 and 85,438,401.60

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Solution

The fourth proportional to 96,775,809.60, 145,163,714.40 and 85,438,401.60 is: 128,157,602.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,775,809.60 : 145,163,714.40 = 85,438,401.60 : x
  2. Step 2: Convert to fraction form
    96,775,809.60/145,163,714.40 = 85,438,401.60/x
  3. Step 3: Cross multiply
    96,775,809.60x = 145,163,714.40 × 85,438,401.60
  4. Step 4: Simplify right side
    96,775,809.60x = 12,402,555,728,654,902
  5. Step 5: Solve for x
    x = 12,402,555,728,654,902/96,775,809.60
  6. Step 6: Final answer
    x = 128,157,602.40

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Similar ratio
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1.5x scale

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.