Home / 130,457,915.47-180,032,039.18-71,721,579.92

Finding the Fourth Proportional to 130,457,915.47, 180,032,039.18 and 71,721,579.92

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Solution

The fourth proportional to 130,457,915.47, 180,032,039.18 and 71,721,579.92 is: 98,975,843.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,457,915.47 : 180,032,039.18 = 71,721,579.92 : x
  2. Step 2: Convert to fraction form
    130,457,915.47/180,032,039.18 = 71,721,579.92/x
  3. Step 3: Cross multiply
    130,457,915.47x = 180,032,039.18 × 71,721,579.92
  4. Step 4: Simplify right side
    130,457,915.47x = 12,912,182,286,208,942
  5. Step 5: Solve for x
    x = 12,912,182,286,208,942/130,457,915.47
  6. Step 6: Final answer
    x = 98,975,843.97

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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.