Home / 105,746.13-145,929.87-57,999.87

Finding the Fourth Proportional to 105,746.13, 145,929.87 and 57,999.87

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Solution

The fourth proportional to 105,746.13, 145,929.87 and 57,999.87 is: 80,039.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,746.13 : 145,929.87 = 57,999.87 : x
  2. Step 2: Convert to fraction form
    105,746.13/145,929.87 = 57,999.87/x
  3. Step 3: Cross multiply
    105,746.13x = 145,929.87 × 57,999.87
  4. Step 4: Simplify right side
    105,746.13x = 8,463,913,489.12
  5. Step 5: Solve for x
    x = 8,463,913,489.12/105,746.13
  6. Step 6: Final answer
    x = 80,039.94

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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.