Home / 105,856,001.60-158,784,002.40-78,982,145.60

Finding the Fourth Proportional to 105,856,001.60, 158,784,002.40 and 78,982,145.60

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Solution

The fourth proportional to 105,856,001.60, 158,784,002.40 and 78,982,145.60 is: 118,473,218.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,856,001.60 : 158,784,002.40 = 78,982,145.60 : x
  2. Step 2: Convert to fraction form
    105,856,001.60/158,784,002.40 = 78,982,145.60/x
  3. Step 3: Cross multiply
    105,856,001.60x = 158,784,002.40 × 78,982,145.60
  4. Step 4: Simplify right side
    105,856,001.60x = 12,541,101,196,507,548
  5. Step 5: Solve for x
    x = 12,541,101,196,507,548/105,856,001.60
  6. Step 6: Final answer
    x = 118,473,218.40

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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.