Home / 124,742.96-172,145.40-68,155.28

Finding the Fourth Proportional to 124,742.96, 172,145.40 and 68,155.28

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Solution

The fourth proportional to 124,742.96, 172,145.40 and 68,155.28 is: 94,054.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,742.96 : 172,145.40 = 68,155.28 : x
  2. Step 2: Convert to fraction form
    124,742.96/172,145.40 = 68,155.28/x
  3. Step 3: Cross multiply
    124,742.96x = 172,145.40 × 68,155.28
  4. Step 4: Simplify right side
    124,742.96x = 11,732,617,937.71
  5. Step 5: Solve for x
    x = 11,732,617,937.71/124,742.96
  6. Step 6: Final answer
    x = 94,054.35

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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.