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Finding the Fourth Proportional to 105,607.75, 145,702.81 and 60,253.15

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Solution

The fourth proportional to 105,607.75, 145,702.81 and 60,253.15 is: 83,128.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,607.75 : 145,702.81 = 60,253.15 : x
  2. Step 2: Convert to fraction form
    105,607.75/145,702.81 = 60,253.15/x
  3. Step 3: Cross multiply
    105,607.75x = 145,702.81 × 60,253.15
  4. Step 4: Simplify right side
    105,607.75x = 8,779,053,266.35
  5. Step 5: Solve for x
    x = 8,779,053,266.35/105,607.75
  6. Step 6: Final answer
    x = 83,128.87

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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.