Home / 145,153.52-217,731.36-39,978.26

Finding the Fourth Proportional to 145,153.52, 217,731.36 and 39,978.26

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Solution

The fourth proportional to 145,153.52, 217,731.36 and 39,978.26 is: 59,967.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,153.52 : 217,731.36 = 39,978.26 : x
  2. Step 2: Convert to fraction form
    145,153.52/217,731.36 = 39,978.26/x
  3. Step 3: Cross multiply
    145,153.52x = 217,731.36 × 39,978.26
  4. Step 4: Simplify right side
    145,153.52x = 8,704,520,920.23
  5. Step 5: Solve for x
    x = 8,704,520,920.23/145,153.52
  6. Step 6: Final answer
    x = 59,967.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.