Home / 143,565,079.51-198,118,801.87-78,374,983.51

Finding the Fourth Proportional to 143,565,079.51, 198,118,801.87 and 78,374,983.51

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Solution

The fourth proportional to 143,565,079.51, 198,118,801.87 and 78,374,983.51 is: 108,156,927.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,565,079.51 : 198,118,801.87 = 78,374,983.51 : x
  2. Step 2: Convert to fraction form
    143,565,079.51/198,118,801.87 = 78,374,983.51/x
  3. Step 3: Cross multiply
    143,565,079.51x = 198,118,801.87 × 78,374,983.51
  4. Step 4: Simplify right side
    143,565,079.51x = 15,527,557,829,582,208
  5. Step 5: Solve for x
    x = 15,527,557,829,582,208/143,565,079.51
  6. Step 6: Final answer
    x = 108,156,927.04

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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.