Home / 105,148.79-145,107.81-57,402.49

Finding the Fourth Proportional to 105,148.79, 145,107.81 and 57,402.49

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Solution

The fourth proportional to 105,148.79, 145,107.81 and 57,402.49 is: 79,216.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,148.79 : 145,107.81 = 57,402.49 : x
  2. Step 2: Convert to fraction form
    105,148.79/145,107.81 = 57,402.49/x
  3. Step 3: Cross multiply
    105,148.79x = 145,107.81 × 57,402.49
  4. Step 4: Simplify right side
    105,148.79x = 8,329,549,612.45
  5. Step 5: Solve for x
    x = 8,329,549,612.45/105,148.79
  6. Step 6: Final answer
    x = 79,216.79

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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.