Home / 121,128,036.90-181,730,169.60-43,351,916.43

Finding the Fourth Proportional to 121,128,036.90, 181,730,169.60 and 43,351,916.43

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Solution

The fourth proportional to 121,128,036.90, 181,730,169.60 and 43,351,916.43 is: 65,041,515.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,128,036.90 : 181,730,169.60 = 43,351,916.43 : x
  2. Step 2: Convert to fraction form
    121,128,036.90/181,730,169.60 = 43,351,916.43/x
  3. Step 3: Cross multiply
    121,128,036.90x = 181,730,169.60 × 43,351,916.43
  4. Step 4: Simplify right side
    121,128,036.90x = 7,878,351,125,308,926
  5. Step 5: Solve for x
    x = 7,878,351,125,308,926/121,128,036.90
  6. Step 6: Final answer
    x = 65,041,515.80

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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.