Home / 145,877.40-201,115.85-109,423.89

Finding the Fourth Proportional to 145,877.40, 201,115.85 and 109,423.89

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Solution

The fourth proportional to 145,877.40, 201,115.85 and 109,423.89 is: 150,858.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,877.40 : 201,115.85 = 109,423.89 : x
  2. Step 2: Convert to fraction form
    145,877.40/201,115.85 = 109,423.89/x
  3. Step 3: Cross multiply
    145,877.40x = 201,115.85 × 109,423.89
  4. Step 4: Simplify right side
    145,877.40x = 22,006,878,100.54
  5. Step 5: Solve for x
    x = 22,006,878,100.54/145,877.40
  6. Step 6: Final answer
    x = 150,858.72

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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.