Home / 105,153.30-145,113.75-57,408.66

Finding the Fourth Proportional to 105,153.30, 145,113.75 and 57,408.66

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Solution

The fourth proportional to 105,153.30, 145,113.75 and 57,408.66 is: 79,225.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,153.30 : 145,113.75 = 57,408.66 : x
  2. Step 2: Convert to fraction form
    105,153.30/145,113.75 = 57,408.66/x
  3. Step 3: Cross multiply
    105,153.30x = 145,113.75 × 57,408.66
  4. Step 4: Simplify right side
    105,153.30x = 8,330,785,935.08
  5. Step 5: Solve for x
    x = 8,330,785,935.08/105,153.30
  6. Step 6: Final answer
    x = 79,225.15

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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.