Home / 153,877.28-212,349.84-85,890.32

Finding the Fourth Proportional to 153,877.28, 212,349.84 and 85,890.32

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Solution

The fourth proportional to 153,877.28, 212,349.84 and 85,890.32 is: 118,528.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,877.28 : 212,349.84 = 85,890.32 : x
  2. Step 2: Convert to fraction form
    153,877.28/212,349.84 = 85,890.32/x
  3. Step 3: Cross multiply
    153,877.28x = 212,349.84 × 85,890.32
  4. Step 4: Simplify right side
    153,877.28x = 18,238,795,709.55
  5. Step 5: Solve for x
    x = 18,238,795,709.55/153,877.28
  6. Step 6: Final answer
    x = 118,528.19

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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.