Home / 105,077.98-145,007.40-57,331.30

Finding the Fourth Proportional to 105,077.98, 145,007.40 and 57,331.30

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Solution

The fourth proportional to 105,077.98, 145,007.40 and 57,331.30 is: 79,117.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,077.98 : 145,007.40 = 57,331.30 : x
  2. Step 2: Convert to fraction form
    105,077.98/145,007.40 = 57,331.30/x
  3. Step 3: Cross multiply
    105,077.98x = 145,007.40 × 57,331.30
  4. Step 4: Simplify right side
    105,077.98x = 8,313,462,751.62
  5. Step 5: Solve for x
    x = 8,313,462,751.62/105,077.98
  6. Step 6: Final answer
    x = 79,117.08

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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.