Home / 112,530.60-168,795.90-103,345.20

Finding the Fourth Proportional to 112,530.60, 168,795.90 and 103,345.20

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Solution

The fourth proportional to 112,530.60, 168,795.90 and 103,345.20 is: 155,017.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,530.60 : 168,795.90 = 103,345.20 : x
  2. Step 2: Convert to fraction form
    112,530.60/168,795.90 = 103,345.20/x
  3. Step 3: Cross multiply
    112,530.60x = 168,795.90 × 103,345.20
  4. Step 4: Simplify right side
    112,530.60x = 17,444,246,044.68
  5. Step 5: Solve for x
    x = 17,444,246,044.68/112,530.60
  6. Step 6: Final answer
    x = 155,017.80

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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.