Home / 105,177.93-145,146.08-57,431.28

Finding the Fourth Proportional to 105,177.93, 145,146.08 and 57,431.28

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Solution

The fourth proportional to 105,177.93, 145,146.08 and 57,431.28 is: 79,255.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,177.93 : 145,146.08 = 57,431.28 : x
  2. Step 2: Convert to fraction form
    105,177.93/145,146.08 = 57,431.28/x
  3. Step 3: Cross multiply
    105,177.93x = 145,146.08 × 57,431.28
  4. Step 4: Simplify right side
    105,177.93x = 8,335,925,161.38
  5. Step 5: Solve for x
    x = 8,335,925,161.38/105,177.93
  6. Step 6: Final answer
    x = 79,255.46

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Double scale
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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.