Home / 105,225.18-145,209.96-57,478.52

Finding the Fourth Proportional to 105,225.18, 145,209.96 and 57,478.52

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Solution

The fourth proportional to 105,225.18, 145,209.96 and 57,478.52 is: 79,319.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,225.18 : 145,209.96 = 57,478.52 : x
  2. Step 2: Convert to fraction form
    105,225.18/145,209.96 = 57,478.52/x
  3. Step 3: Cross multiply
    105,225.18x = 145,209.96 × 57,478.52
  4. Step 4: Simplify right side
    105,225.18x = 8,346,452,864.01
  5. Step 5: Solve for x
    x = 8,346,452,864.01/105,225.18
  6. Step 6: Final answer
    x = 79,319.92

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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.