Home / 154,587.71-213,330.56-85,681.56

Finding the Fourth Proportional to 154,587.71, 213,330.56 and 85,681.56

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Solution

The fourth proportional to 154,587.71, 213,330.56 and 85,681.56 is: 118,240.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,587.71 : 213,330.56 = 85,681.56 : x
  2. Step 2: Convert to fraction form
    154,587.71/213,330.56 = 85,681.56/x
  3. Step 3: Cross multiply
    154,587.71x = 213,330.56 × 85,681.56
  4. Step 4: Simplify right side
    154,587.71x = 18,278,495,176.47
  5. Step 5: Solve for x
    x = 18,278,495,176.47/154,587.71
  6. Step 6: Final answer
    x = 118,240.29

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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.