Home / 105,055.40-144,976.26-57,308.74

Finding the Fourth Proportional to 105,055.40, 144,976.26 and 57,308.74

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Solution

The fourth proportional to 105,055.40, 144,976.26 and 57,308.74 is: 79,085.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,055.40 : 144,976.26 = 57,308.74 : x
  2. Step 2: Convert to fraction form
    105,055.40/144,976.26 = 57,308.74/x
  3. Step 3: Cross multiply
    105,055.40x = 144,976.26 × 57,308.74
  4. Step 4: Simplify right side
    105,055.40x = 8,308,406,428.07
  5. Step 5: Solve for x
    x = 8,308,406,428.07/105,055.40
  6. Step 6: Final answer
    x = 79,085.95

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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.