Home / 131,618,581.09-181,631,417.31-72,879,985.10

Finding the Fourth Proportional to 131,618,581.09, 181,631,417.31 and 72,879,985.10

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Solution

The fourth proportional to 131,618,581.09, 181,631,417.31 and 72,879,985.10 is: 100,573,147.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,618,581.09 : 181,631,417.31 = 72,879,985.10 : x
  2. Step 2: Convert to fraction form
    131,618,581.09/181,631,417.31 = 72,879,985.10/x
  3. Step 3: Cross multiply
    131,618,581.09x = 181,631,417.31 × 72,879,985.10
  4. Step 4: Simplify right side
    131,618,581.09x = 13,237,294,987,698,762
  5. Step 5: Solve for x
    x = 13,237,294,987,698,762/131,618,581.09
  6. Step 6: Final answer
    x = 100,573,147.64

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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.