Home / 128,952,053.70-193,428,080.55-103,442,885.70

Finding the Fourth Proportional to 128,952,053.70, 193,428,080.55 and 103,442,885.70

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Solution

The fourth proportional to 128,952,053.70, 193,428,080.55 and 103,442,885.70 is: 155,164,328.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,952,053.70 : 193,428,080.55 = 103,442,885.70 : x
  2. Step 2: Convert to fraction form
    128,952,053.70/193,428,080.55 = 103,442,885.70/x
  3. Step 3: Cross multiply
    128,952,053.70x = 193,428,080.55 × 103,442,885.70
  4. Step 4: Simplify right side
    128,952,053.70x = 20,008,758,827,504,044
  5. Step 5: Solve for x
    x = 20,008,758,827,504,044/128,952,053.70
  6. Step 6: Final answer
    x = 155,164,328.55

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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.