Home / 105,225.36-145,208.58-57,478.92

Finding the Fourth Proportional to 105,225.36, 145,208.58 and 57,478.92

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Solution

The fourth proportional to 105,225.36, 145,208.58 and 57,478.92 is: 79,319.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,225.36 : 145,208.58 = 57,478.92 : x
  2. Step 2: Convert to fraction form
    105,225.36/145,208.58 = 57,478.92/x
  3. Step 3: Cross multiply
    105,225.36x = 145,208.58 × 57,478.92
  4. Step 4: Simplify right side
    105,225.36x = 8,346,432,353.13
  5. Step 5: Solve for x
    x = 8,346,432,353.13/105,225.36
  6. Step 6: Final answer
    x = 79,319.59

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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.