Home / 93,302.18-128,677.77-78,837.23

Finding the Fourth Proportional to 93,302.18, 128,677.77 and 78,837.23

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Solution

The fourth proportional to 93,302.18, 128,677.77 and 78,837.23 is: 108,728.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,302.18 : 128,677.77 = 78,837.23 : x
  2. Step 2: Convert to fraction form
    93,302.18/128,677.77 = 78,837.23/x
  3. Step 3: Cross multiply
    93,302.18x = 128,677.77 × 78,837.23
  4. Step 4: Simplify right side
    93,302.18x = 10,144,598,949.38
  5. Step 5: Solve for x
    x = 10,144,598,949.38/93,302.18
  6. Step 6: Final answer
    x = 108,728.42

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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.