Home / 128,925.68-193,387.74-70,134.98

Finding the Fourth Proportional to 128,925.68, 193,387.74 and 70,134.98

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Solution

The fourth proportional to 128,925.68, 193,387.74 and 70,134.98 is: 105,202.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,925.68 : 193,387.74 = 70,134.98 : x
  2. Step 2: Convert to fraction form
    128,925.68/193,387.74 = 70,134.98/x
  3. Step 3: Cross multiply
    128,925.68x = 193,387.74 × 70,134.98
  4. Step 4: Simplify right side
    128,925.68x = 13,563,245,277.15
  5. Step 5: Solve for x
    x = 13,563,245,277.15/128,925.68
  6. Step 6: Final answer
    x = 105,202.05

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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.