Home / 257,673.18-386,505.93-89,316.06

Finding the Fourth Proportional to 257,673.18, 386,505.93 and 89,316.06

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Solution

The fourth proportional to 257,673.18, 386,505.93 and 89,316.06 is: 133,972.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,673.18 : 386,505.93 = 89,316.06 : x
  2. Step 2: Convert to fraction form
    257,673.18/386,505.93 = 89,316.06/x
  3. Step 3: Cross multiply
    257,673.18x = 386,505.93 × 89,316.06
  4. Step 4: Simplify right side
    257,673.18x = 34,521,186,834.24
  5. Step 5: Solve for x
    x = 34,521,186,834.24/257,673.18
  6. Step 6: Final answer
    x = 133,972.76

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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.