Home / 105,699.02-145,864.60-57,951.35

Finding the Fourth Proportional to 105,699.02, 145,864.60 and 57,951.35

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Solution

The fourth proportional to 105,699.02, 145,864.60 and 57,951.35 is: 79,972.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,699.02 : 145,864.60 = 57,951.35 : x
  2. Step 2: Convert to fraction form
    105,699.02/145,864.60 = 57,951.35/x
  3. Step 3: Cross multiply
    105,699.02x = 145,864.60 × 57,951.35
  4. Step 4: Simplify right side
    105,699.02x = 8,453,050,487.21
  5. Step 5: Solve for x
    x = 8,453,050,487.21/105,699.02
  6. Step 6: Final answer
    x = 79,972.84

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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.