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Finding the Fourth Proportional to 99,670,368.30, 149,505,552.45 and 79,514,976.30

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Solution

The fourth proportional to 99,670,368.30, 149,505,552.45 and 79,514,976.30 is: 119,272,464.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,670,368.30 : 149,505,552.45 = 79,514,976.30 : x
  2. Step 2: Convert to fraction form
    99,670,368.30/149,505,552.45 = 79,514,976.30/x
  3. Step 3: Cross multiply
    99,670,368.30x = 149,505,552.45 × 79,514,976.30
  4. Step 4: Simplify right side
    99,670,368.30x = 11,887,930,459,780,156
  5. Step 5: Solve for x
    x = 11,887,930,459,780,156/99,670,368.30
  6. Step 6: Final answer
    x = 119,272,464.45

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Double scale
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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.