Home / 112,312.40-168,390.56-42,172.88

Finding the Fourth Proportional to 112,312.40, 168,390.56 and 42,172.88

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Solution

The fourth proportional to 112,312.40, 168,390.56 and 42,172.88 is: 63,230.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,312.40 : 168,390.56 = 42,172.88 : x
  2. Step 2: Convert to fraction form
    112,312.40/168,390.56 = 42,172.88/x
  3. Step 3: Cross multiply
    112,312.40x = 168,390.56 × 42,172.88
  4. Step 4: Simplify right side
    112,312.40x = 7,101,514,880.01
  5. Step 5: Solve for x
    x = 7,101,514,880.01/112,312.40
  6. Step 6: Final answer
    x = 63,230.02

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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.