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Finding the Fourth Proportional to 153,875.68, 212,352.78 and 85,891.24

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Solution

The fourth proportional to 153,875.68, 212,352.78 and 85,891.24 is: 118,532.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,875.68 : 212,352.78 = 85,891.24 : x
  2. Step 2: Convert to fraction form
    153,875.68/212,352.78 = 85,891.24/x
  3. Step 3: Cross multiply
    153,875.68x = 212,352.78 × 85,891.24
  4. Step 4: Simplify right side
    153,875.68x = 18,239,243,591.65
  5. Step 5: Solve for x
    x = 18,239,243,591.65/153,875.68
  6. Step 6: Final answer
    x = 118,532.33

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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.