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Finding the Fourth Proportional to 121,477.60, 182,216.40 and 42,599.80

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Solution

The fourth proportional to 121,477.60, 182,216.40 and 42,599.80 is: 63,899.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,477.60 : 182,216.40 = 42,599.80 : x
  2. Step 2: Convert to fraction form
    121,477.60/182,216.40 = 42,599.80/x
  3. Step 3: Cross multiply
    121,477.60x = 182,216.40 × 42,599.80
  4. Step 4: Simplify right side
    121,477.60x = 7,762,382,196.72
  5. Step 5: Solve for x
    x = 7,762,382,196.72/121,477.60
  6. Step 6: Final answer
    x = 63,899.70

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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.