Home / 117,420.71-162,038.55-71,463.72

Finding the Fourth Proportional to 117,420.71, 162,038.55 and 71,463.72

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Solution

The fourth proportional to 117,420.71, 162,038.55 and 71,463.72 is: 98,618.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,420.71 : 162,038.55 = 71,463.72 : x
  2. Step 2: Convert to fraction form
    117,420.71/162,038.55 = 71,463.72/x
  3. Step 3: Cross multiply
    117,420.71x = 162,038.55 × 71,463.72
  4. Step 4: Simplify right side
    117,420.71x = 11,579,877,329.58
  5. Step 5: Solve for x
    x = 11,579,877,329.58/117,420.71
  6. Step 6: Final answer
    x = 98,618.69

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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.