Home / 105,098.36-145,038.80-57,354.78

Finding the Fourth Proportional to 105,098.36, 145,038.80 and 57,354.78

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Solution

The fourth proportional to 105,098.36, 145,038.80 and 57,354.78 is: 79,151.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,098.36 : 145,038.80 = 57,354.78 : x
  2. Step 2: Convert to fraction form
    105,098.36/145,038.80 = 57,354.78/x
  3. Step 3: Cross multiply
    105,098.36x = 145,038.80 × 57,354.78
  4. Step 4: Simplify right side
    105,098.36x = 8,318,668,178.69
  5. Step 5: Solve for x
    x = 8,318,668,178.69/105,098.36
  6. Step 6: Final answer
    x = 79,151.27

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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.