Home / 165,005,613.60-247,345,124.40-72,939,328.80

Finding the Fourth Proportional to 165,005,613.60, 247,345,124.40 and 72,939,328.80

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Solution

The fourth proportional to 165,005,613.60, 247,345,124.40 and 72,939,328.80 is: 109,336,809.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,005,613.60 : 247,345,124.40 = 72,939,328.80 : x
  2. Step 2: Convert to fraction form
    165,005,613.60/247,345,124.40 = 72,939,328.80/x
  3. Step 3: Cross multiply
    165,005,613.60x = 247,345,124.40 × 72,939,328.80
  4. Step 4: Simplify right side
    165,005,613.60x = 18,041,187,355,688,504
  5. Step 5: Solve for x
    x = 18,041,187,355,688,504/165,005,613.60
  6. Step 6: Final answer
    x = 109,336,809.59

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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.