Home / 105,663.06-145,814.16-57,916.30

Finding the Fourth Proportional to 105,663.06, 145,814.16 and 57,916.30

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Solution

The fourth proportional to 105,663.06, 145,814.16 and 57,916.30 is: 79,924.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,663.06 : 145,814.16 = 57,916.30 : x
  2. Step 2: Convert to fraction form
    105,663.06/145,814.16 = 57,916.30/x
  3. Step 3: Cross multiply
    105,663.06x = 145,814.16 × 57,916.30
  4. Step 4: Simplify right side
    105,663.06x = 8,445,016,634.81
  5. Step 5: Solve for x
    x = 8,445,016,634.81/105,663.06
  6. Step 6: Final answer
    x = 79,924.02

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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.