Home / 105,100.49-145,041.75-57,356.91

Finding the Fourth Proportional to 105,100.49, 145,041.75 and 57,356.91

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Solution

The fourth proportional to 105,100.49, 145,041.75 and 57,356.91 is: 79,154.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,100.49 : 145,041.75 = 57,356.91 : x
  2. Step 2: Convert to fraction form
    105,100.49/145,041.75 = 57,356.91/x
  3. Step 3: Cross multiply
    105,100.49x = 145,041.75 × 57,356.91
  4. Step 4: Simplify right side
    105,100.49x = 8,319,146,600.99
  5. Step 5: Solve for x
    x = 8,319,146,600.99/105,100.49
  6. Step 6: Final answer
    x = 79,154.22

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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.