Home / 103,455.12-155,250.64-56,740.80

Finding the Fourth Proportional to 103,455.12, 155,250.64 and 56,740.80

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Solution

The fourth proportional to 103,455.12, 155,250.64 and 56,740.80 is: 85,148.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,455.12 : 155,250.64 = 56,740.80 : x
  2. Step 2: Convert to fraction form
    103,455.12/155,250.64 = 56,740.80/x
  3. Step 3: Cross multiply
    103,455.12x = 155,250.64 × 56,740.80
  4. Step 4: Simplify right side
    103,455.12x = 8,809,045,514.11
  5. Step 5: Solve for x
    x = 8,809,045,514.11/103,455.12
  6. Step 6: Final answer
    x = 85,148.47

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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.