Home / 172,758,629.80-258,938,879.10-70,455,500.20

Finding the Fourth Proportional to 172,758,629.80, 258,938,879.10 and 70,455,500.20

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Solution

The fourth proportional to 172,758,629.80, 258,938,879.10 and 70,455,500.20 is: 105,602,066.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,758,629.80 : 258,938,879.10 = 70,455,500.20 : x
  2. Step 2: Convert to fraction form
    172,758,629.80/258,938,879.10 = 70,455,500.20/x
  3. Step 3: Cross multiply
    172,758,629.80x = 258,938,879.10 × 70,455,500.20
  4. Step 4: Simplify right side
    172,758,629.80x = 18,243,668,248,217,828
  5. Step 5: Solve for x
    x = 18,243,668,248,217,828/172,758,629.80
  6. Step 6: Final answer
    x = 105,602,066.13

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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.