Home / 105,458.21-145,509.81-62,451.20

Finding the Fourth Proportional to 105,458.21, 145,509.81 and 62,451.20

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Solution

The fourth proportional to 105,458.21, 145,509.81 and 62,451.20 is: 86,169.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,458.21 : 145,509.81 = 62,451.20 : x
  2. Step 2: Convert to fraction form
    105,458.21/145,509.81 = 62,451.20/x
  3. Step 3: Cross multiply
    105,458.21x = 145,509.81 × 62,451.20
  4. Step 4: Simplify right side
    105,458.21x = 9,087,261,518.72
  5. Step 5: Solve for x
    x = 9,087,261,518.72/105,458.21
  6. Step 6: Final answer
    x = 86,169.32

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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.