Home / 126,219,919.20-189,329,878.80-121,118,085.60

Finding the Fourth Proportional to 126,219,919.20, 189,329,878.80 and 121,118,085.60

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Solution

The fourth proportional to 126,219,919.20, 189,329,878.80 and 121,118,085.60 is: 181,677,128.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,219,919.20 : 189,329,878.80 = 121,118,085.60 : x
  2. Step 2: Convert to fraction form
    126,219,919.20/189,329,878.80 = 121,118,085.60/x
  3. Step 3: Cross multiply
    126,219,919.20x = 189,329,878.80 × 121,118,085.60
  4. Step 4: Simplify right side
    126,219,919.20x = 22,931,272,467,136,024
  5. Step 5: Solve for x
    x = 22,931,272,467,136,024/126,219,919.20
  6. Step 6: Final answer
    x = 181,677,128.40

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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.