Home / 105,159.87-145,124.06-57,416.85

Finding the Fourth Proportional to 105,159.87, 145,124.06 and 57,416.85

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Solution

The fourth proportional to 105,159.87, 145,124.06 and 57,416.85 is: 79,237.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,159.87 : 145,124.06 = 57,416.85 : x
  2. Step 2: Convert to fraction form
    105,159.87/145,124.06 = 57,416.85/x
  3. Step 3: Cross multiply
    105,159.87x = 145,124.06 × 57,416.85
  4. Step 4: Simplify right side
    105,159.87x = 8,332,566,097.33
  5. Step 5: Solve for x
    x = 8,332,566,097.33/105,159.87
  6. Step 6: Final answer
    x = 79,237.13

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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.