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Finding the Fourth Proportional to 153,736.48, 212,155.50 and 85,754.08

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Solution

The fourth proportional to 153,736.48, 212,155.50 and 85,754.08 is: 118,340.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,736.48 : 212,155.50 = 85,754.08 : x
  2. Step 2: Convert to fraction form
    153,736.48/212,155.50 = 85,754.08/x
  3. Step 3: Cross multiply
    153,736.48x = 212,155.50 × 85,754.08
  4. Step 4: Simplify right side
    153,736.48x = 18,193,199,719.44
  5. Step 5: Solve for x
    x = 18,193,199,719.44/153,736.48
  6. Step 6: Final answer
    x = 118,340.16

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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.