Home / 145,748.41-201,147.15-85,315.39

Finding the Fourth Proportional to 145,748.41, 201,147.15 and 85,315.39

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Solution

The fourth proportional to 145,748.41, 201,147.15 and 85,315.39 is: 117,743.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,748.41 : 201,147.15 = 85,315.39 : x
  2. Step 2: Convert to fraction form
    145,748.41/201,147.15 = 85,315.39/x
  3. Step 3: Cross multiply
    145,748.41x = 201,147.15 × 85,315.39
  4. Step 4: Simplify right side
    145,748.41x = 17,160,947,549.64
  5. Step 5: Solve for x
    x = 17,160,947,549.64/145,748.41
  6. Step 6: Final answer
    x = 117,743.63

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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.