Home / 105,264.84-145,267.38-57,520.20

Finding the Fourth Proportional to 105,264.84, 145,267.38 and 57,520.20

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Solution

The fourth proportional to 105,264.84, 145,267.38 and 57,520.20 is: 79,378.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,264.84 : 145,267.38 = 57,520.20 : x
  2. Step 2: Convert to fraction form
    105,264.84/145,267.38 = 57,520.20/x
  3. Step 3: Cross multiply
    105,264.84x = 145,267.38 × 57,520.20
  4. Step 4: Simplify right side
    105,264.84x = 8,355,808,751.08
  5. Step 5: Solve for x
    x = 8,355,808,751.08/105,264.84
  6. Step 6: Final answer
    x = 79,378.91

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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.