Home / 100,456,417-138,621,369.90-60,778,730.80

Finding the Fourth Proportional to 100,456,417, 138,621,369.90 and 60,778,730.80

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Solution

The fourth proportional to 100,456,417, 138,621,369.90 and 60,778,730.80 is: 83,869,514.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,456,417 : 138,621,369.90 = 60,778,730.80 : x
  2. Step 2: Convert to fraction form
    100,456,417/138,621,369.90 = 60,778,730.80/x
  3. Step 3: Cross multiply
    100,456,417x = 138,621,369.90 × 60,778,730.80
  4. Step 4: Simplify right side
    100,456,417x = 8,425,230,924,279,323
  5. Step 5: Solve for x
    x = 8,425,230,924,279,323/100,456,417
  6. Step 6: Final answer
    x = 83,869,514.52

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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.