Home / 121,536.30-181,915.65-112,205.10

Finding the Fourth Proportional to 121,536.30, 181,915.65 and 112,205.10

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Solution

The fourth proportional to 121,536.30, 181,915.65 and 112,205.10 is: 167,948.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,536.30 : 181,915.65 = 112,205.10 : x
  2. Step 2: Convert to fraction form
    121,536.30/181,915.65 = 112,205.10/x
  3. Step 3: Cross multiply
    121,536.30x = 181,915.65 × 112,205.10
  4. Step 4: Simplify right side
    121,536.30x = 20,411,863,699.82
  5. Step 5: Solve for x
    x = 20,411,863,699.82/121,536.30
  6. Step 6: Final answer
    x = 167,948.70

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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.