Home / 141,869.98-195,781.93-78,210.05

Finding the Fourth Proportional to 141,869.98, 195,781.93 and 78,210.05

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Solution

The fourth proportional to 141,869.98, 195,781.93 and 78,210.05 is: 107,930.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,869.98 : 195,781.93 = 78,210.05 : x
  2. Step 2: Convert to fraction form
    141,869.98/195,781.93 = 78,210.05/x
  3. Step 3: Cross multiply
    141,869.98x = 195,781.93 × 78,210.05
  4. Step 4: Simplify right side
    141,869.98x = 15,312,114,534.40
  5. Step 5: Solve for x
    x = 15,312,114,534.40/141,869.98
  6. Step 6: Final answer
    x = 107,930.62

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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.