Home / 128,948,106.70-193,422,160.05-117,043,828.30

Finding the Fourth Proportional to 128,948,106.70, 193,422,160.05 and 117,043,828.30

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Solution

The fourth proportional to 128,948,106.70, 193,422,160.05 and 117,043,828.30 is: 175,565,742.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,948,106.70 : 193,422,160.05 = 117,043,828.30 : x
  2. Step 2: Convert to fraction form
    128,948,106.70/193,422,160.05 = 117,043,828.30/x
  3. Step 3: Cross multiply
    128,948,106.70x = 193,422,160.05 × 117,043,828.30
  4. Step 4: Simplify right side
    128,948,106.70x = 22,638,870,090,307,320
  5. Step 5: Solve for x
    x = 22,638,870,090,307,320/128,948,106.70
  6. Step 6: Final answer
    x = 175,565,742.45

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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.