Home / 130,457,913.72-180,032,036.76-71,721,578.18

Finding the Fourth Proportional to 130,457,913.72, 180,032,036.76 and 71,721,578.18

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Solution

The fourth proportional to 130,457,913.72, 180,032,036.76 and 71,721,578.18 is: 98,975,841.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,457,913.72 : 180,032,036.76 = 71,721,578.18 : x
  2. Step 2: Convert to fraction form
    130,457,913.72/180,032,036.76 = 71,721,578.18/x
  3. Step 3: Cross multiply
    130,457,913.72x = 180,032,036.76 × 71,721,578.18
  4. Step 4: Simplify right side
    130,457,913.72x = 12,912,181,798,486,812
  5. Step 5: Solve for x
    x = 12,912,181,798,486,812/130,457,913.72
  6. Step 6: Final answer
    x = 98,975,841.56

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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.