Home / 78,368.07-107,902.11-69,160.20

Finding the Fourth Proportional to 78,368.07, 107,902.11 and 69,160.20

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Solution

The fourth proportional to 78,368.07, 107,902.11 and 69,160.20 is: 95,224.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,368.07 : 107,902.11 = 69,160.20 : x
  2. Step 2: Convert to fraction form
    78,368.07/107,902.11 = 69,160.20/x
  3. Step 3: Cross multiply
    78,368.07x = 107,902.11 × 69,160.20
  4. Step 4: Simplify right side
    78,368.07x = 7,462,531,508.02
  5. Step 5: Solve for x
    x = 7,462,531,508.02/78,368.07
  6. Step 6: Final answer
    x = 95,224.13

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1.5x scale

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.