Home / 105,254.90-145,250.06-57,507.21

Finding the Fourth Proportional to 105,254.90, 145,250.06 and 57,507.21

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Solution

The fourth proportional to 105,254.90, 145,250.06 and 57,507.21 is: 79,359.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,254.90 : 145,250.06 = 57,507.21 : x
  2. Step 2: Convert to fraction form
    105,254.90/145,250.06 = 57,507.21/x
  3. Step 3: Cross multiply
    105,254.90x = 145,250.06 × 57,507.21
  4. Step 4: Simplify right side
    105,254.90x = 8,352,925,415.40
  5. Step 5: Solve for x
    x = 8,352,925,415.40/105,254.90
  6. Step 6: Final answer
    x = 79,359.02

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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.