Home / 105,174.84-145,140.18-57,428.04

Finding the Fourth Proportional to 105,174.84, 145,140.18 and 57,428.04

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Solution

The fourth proportional to 105,174.84, 145,140.18 and 57,428.04 is: 79,250.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,174.84 : 145,140.18 = 57,428.04 : x
  2. Step 2: Convert to fraction form
    105,174.84/145,140.18 = 57,428.04/x
  3. Step 3: Cross multiply
    105,174.84x = 145,140.18 × 57,428.04
  4. Step 4: Simplify right side
    105,174.84x = 8,335,116,062.65
  5. Step 5: Solve for x
    x = 8,335,116,062.65/105,174.84
  6. Step 6: Final answer
    x = 79,250.10

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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.