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Finding the Fourth Proportional to 163,498.80, 245,404.80 and 84,669.60

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Solution

The fourth proportional to 163,498.80, 245,404.80 and 84,669.60 is: 127,085.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,498.80 : 245,404.80 = 84,669.60 : x
  2. Step 2: Convert to fraction form
    163,498.80/245,404.80 = 84,669.60/x
  3. Step 3: Cross multiply
    163,498.80x = 245,404.80 × 84,669.60
  4. Step 4: Simplify right side
    163,498.80x = 20,778,326,254.08
  5. Step 5: Solve for x
    x = 20,778,326,254.08/163,498.80
  6. Step 6: Final answer
    x = 127,085.50

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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.