Home / 128,960,015.20-193,440,022.80-88,145,346.40

Finding the Fourth Proportional to 128,960,015.20, 193,440,022.80 and 88,145,346.40

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Solution

The fourth proportional to 128,960,015.20, 193,440,022.80 and 88,145,346.40 is: 132,218,019.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,960,015.20 : 193,440,022.80 = 88,145,346.40 : x
  2. Step 2: Convert to fraction form
    128,960,015.20/193,440,022.80 = 88,145,346.40/x
  3. Step 3: Cross multiply
    128,960,015.20x = 193,440,022.80 × 88,145,346.40
  4. Step 4: Simplify right side
    128,960,015.20x = 17,050,837,817,329,900
  5. Step 5: Solve for x
    x = 17,050,837,817,329,900/128,960,015.20
  6. Step 6: Final answer
    x = 132,218,019.60

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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.