Home / 157,386.12-217,189.98-85,766.76

Finding the Fourth Proportional to 157,386.12, 217,189.98 and 85,766.76

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Solution

The fourth proportional to 157,386.12, 217,189.98 and 85,766.76 is: 118,356.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,386.12 : 217,189.98 = 85,766.76 : x
  2. Step 2: Convert to fraction form
    157,386.12/217,189.98 = 85,766.76/x
  3. Step 3: Cross multiply
    157,386.12x = 217,189.98 × 85,766.76
  4. Step 4: Simplify right side
    157,386.12x = 18,627,680,889.06
  5. Step 5: Solve for x
    x = 18,627,680,889.06/157,386.12
  6. Step 6: Final answer
    x = 118,356.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.