Home / 121,743.64-168,113.10-76,500.01

Finding the Fourth Proportional to 121,743.64, 168,113.10 and 76,500.01

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Solution

The fourth proportional to 121,743.64, 168,113.10 and 76,500.01 is: 105,637.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,743.64 : 168,113.10 = 76,500.01 : x
  2. Step 2: Convert to fraction form
    121,743.64/168,113.10 = 76,500.01/x
  3. Step 3: Cross multiply
    121,743.64x = 168,113.10 × 76,500.01
  4. Step 4: Simplify right side
    121,743.64x = 12,860,653,831.13
  5. Step 5: Solve for x
    x = 12,860,653,831.13/121,743.64
  6. Step 6: Final answer
    x = 105,637.17

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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.