Home / 105,097.85-145,038.12-57,354.28

Finding the Fourth Proportional to 105,097.85, 145,038.12 and 57,354.28

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Solution

The fourth proportional to 105,097.85, 145,038.12 and 57,354.28 is: 79,150.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,097.85 : 145,038.12 = 57,354.28 : x
  2. Step 2: Convert to fraction form
    105,097.85/145,038.12 = 57,354.28/x
  3. Step 3: Cross multiply
    105,097.85x = 145,038.12 × 57,354.28
  4. Step 4: Simplify right side
    105,097.85x = 8,318,556,367.48
  5. Step 5: Solve for x
    x = 8,318,556,367.48/105,097.85
  6. Step 6: Final answer
    x = 79,150.59

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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.