Home / 105,103.15-145,045.55-59,787.70

Finding the Fourth Proportional to 105,103.15, 145,045.55 and 59,787.70

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Solution

The fourth proportional to 105,103.15, 145,045.55 and 59,787.70 is: 82,508.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,103.15 : 145,045.55 = 59,787.70 : x
  2. Step 2: Convert to fraction form
    105,103.15/145,045.55 = 59,787.70/x
  3. Step 3: Cross multiply
    105,103.15x = 145,045.55 × 59,787.70
  4. Step 4: Simplify right side
    105,103.15x = 8,671,939,829.74
  5. Step 5: Solve for x
    x = 8,671,939,829.74/105,103.15
  6. Step 6: Final answer
    x = 82,508.85

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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.