Home / 105,675.98-145,839.63-57,929.45

Finding the Fourth Proportional to 105,675.98, 145,839.63 and 57,929.45

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Solution

The fourth proportional to 105,675.98, 145,839.63 and 57,929.45 is: 79,946.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,675.98 : 145,839.63 = 57,929.45 : x
  2. Step 2: Convert to fraction form
    105,675.98/145,839.63 = 57,929.45/x
  3. Step 3: Cross multiply
    105,675.98x = 145,839.63 × 57,929.45
  4. Step 4: Simplify right side
    105,675.98x = 8,448,408,824.91
  5. Step 5: Solve for x
    x = 8,448,408,824.91/105,675.98
  6. Step 6: Final answer
    x = 79,946.35

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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.