Home / 121,287,125.70-181,930,688.55-99,763,765.20

Finding the Fourth Proportional to 121,287,125.70, 181,930,688.55 and 99,763,765.20

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Solution

The fourth proportional to 121,287,125.70, 181,930,688.55 and 99,763,765.20 is: 149,645,647.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,287,125.70 : 181,930,688.55 = 99,763,765.20 : x
  2. Step 2: Convert to fraction form
    121,287,125.70/181,930,688.55 = 99,763,765.20/x
  3. Step 3: Cross multiply
    121,287,125.70x = 181,930,688.55 × 99,763,765.20
  4. Step 4: Simplify right side
    121,287,125.70x = 18,150,090,495,176,532
  5. Step 5: Solve for x
    x = 18,150,090,495,176,532/121,287,125.70
  6. Step 6: Final answer
    x = 149,645,647.80

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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.