Home / 89,619,189.60-134,428,784.40-85,140,213.60

Finding the Fourth Proportional to 89,619,189.60, 134,428,784.40 and 85,140,213.60

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Solution

The fourth proportional to 89,619,189.60, 134,428,784.40 and 85,140,213.60 is: 127,710,320.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,619,189.60 : 134,428,784.40 = 85,140,213.60 : x
  2. Step 2: Convert to fraction form
    89,619,189.60/134,428,784.40 = 85,140,213.60/x
  3. Step 3: Cross multiply
    89,619,189.60x = 134,428,784.40 × 85,140,213.60
  4. Step 4: Simplify right side
    89,619,189.60x = 11,445,295,417,804,348
  5. Step 5: Solve for x
    x = 11,445,295,417,804,348/89,619,189.60
  6. Step 6: Final answer
    x = 127,710,320.40

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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.