Home / 129,108.86-193,068.75-122,810.30

Finding the Fourth Proportional to 129,108.86, 193,068.75 and 122,810.30

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Solution

The fourth proportional to 129,108.86, 193,068.75 and 122,810.30 is: 183,649.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,108.86 : 193,068.75 = 122,810.30 : x
  2. Step 2: Convert to fraction form
    129,108.86/193,068.75 = 122,810.30/x
  3. Step 3: Cross multiply
    129,108.86x = 193,068.75 × 122,810.30
  4. Step 4: Simplify right side
    129,108.86x = 23,710,830,494.07
  5. Step 5: Solve for x
    x = 23,710,830,494.07/129,108.86
  6. Step 6: Final answer
    x = 183,649.91

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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.