Home / 115,919,619.60-173,879,429.40-87,009,229.20

Finding the Fourth Proportional to 115,919,619.60, 173,879,429.40 and 87,009,229.20

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Solution

The fourth proportional to 115,919,619.60, 173,879,429.40 and 87,009,229.20 is: 130,513,843.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,919,619.60 : 173,879,429.40 = 87,009,229.20 : x
  2. Step 2: Convert to fraction form
    115,919,619.60/173,879,429.40 = 87,009,229.20/x
  3. Step 3: Cross multiply
    115,919,619.60x = 173,879,429.40 × 87,009,229.20
  4. Step 4: Simplify right side
    115,919,619.60x = 15,129,115,125,829,820
  5. Step 5: Solve for x
    x = 15,129,115,125,829,820/115,919,619.60
  6. Step 6: Final answer
    x = 130,513,843.80

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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.