Home / 105,503.19-145,594.16-57,756.12

Finding the Fourth Proportional to 105,503.19, 145,594.16 and 57,756.12

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Solution

The fourth proportional to 105,503.19, 145,594.16 and 57,756.12 is: 79,703.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,503.19 : 145,594.16 = 57,756.12 : x
  2. Step 2: Convert to fraction form
    105,503.19/145,594.16 = 57,756.12/x
  3. Step 3: Cross multiply
    105,503.19x = 145,594.16 × 57,756.12
  4. Step 4: Simplify right side
    105,503.19x = 8,408,954,574.92
  5. Step 5: Solve for x
    x = 8,408,954,574.92/105,503.19
  6. Step 6: Final answer
    x = 79,703.32

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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.