Home / 128,980,689.55-193,471,034.33-103,471,521.55

Finding the Fourth Proportional to 128,980,689.55, 193,471,034.33 and 103,471,521.55

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Solution

The fourth proportional to 128,980,689.55, 193,471,034.33 and 103,471,521.55 is: 155,207,282.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,980,689.55 : 193,471,034.33 = 103,471,521.55 : x
  2. Step 2: Convert to fraction form
    128,980,689.55/193,471,034.33 = 103,471,521.55/x
  3. Step 3: Cross multiply
    128,980,689.55x = 193,471,034.33 × 103,471,521.55
  4. Step 4: Simplify right side
    128,980,689.55x = 20,018,742,297,977,384
  5. Step 5: Solve for x
    x = 20,018,742,297,977,384/128,980,689.55
  6. Step 6: Final answer
    x = 155,207,282.33

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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.