Home / 145,478,448.86-200,758,688.16-79,398,410.58

Finding the Fourth Proportional to 145,478,448.86, 200,758,688.16 and 79,398,410.58

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Solution

The fourth proportional to 145,478,448.86, 200,758,688.16 and 79,398,410.58 is: 109,568,949.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,478,448.86 : 200,758,688.16 = 79,398,410.58 : x
  2. Step 2: Convert to fraction form
    145,478,448.86/200,758,688.16 = 79,398,410.58/x
  3. Step 3: Cross multiply
    145,478,448.86x = 200,758,688.16 × 79,398,410.58
  4. Step 4: Simplify right side
    145,478,448.86x = 15,939,920,750,029,864
  5. Step 5: Solve for x
    x = 15,939,920,750,029,864/145,478,448.86
  6. Step 6: Final answer
    x = 109,568,949.05

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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.