Home / 105,137.76-145,088.16-57,389.84

Finding the Fourth Proportional to 105,137.76, 145,088.16 and 57,389.84

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Solution

The fourth proportional to 105,137.76, 145,088.16 and 57,389.84 is: 79,196.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,137.76 : 145,088.16 = 57,389.84 : x
  2. Step 2: Convert to fraction form
    105,137.76/145,088.16 = 57,389.84/x
  3. Step 3: Cross multiply
    105,137.76x = 145,088.16 × 57,389.84
  4. Step 4: Simplify right side
    105,137.76x = 8,326,586,288.29
  5. Step 5: Solve for x
    x = 8,326,586,288.29/105,137.76
  6. Step 6: Final answer
    x = 79,196.92

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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.