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Finding the Fourth Proportional to 105,088.54, 145,020.98 and 57,342.69

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Solution

The fourth proportional to 105,088.54, 145,020.98 and 57,342.69 is: 79,132.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,088.54 : 145,020.98 = 57,342.69 : x
  2. Step 2: Convert to fraction form
    105,088.54/145,020.98 = 57,342.69/x
  3. Step 3: Cross multiply
    105,088.54x = 145,020.98 × 57,342.69
  4. Step 4: Simplify right side
    105,088.54x = 8,315,892,374.53
  5. Step 5: Solve for x
    x = 8,315,892,374.53/105,088.54
  6. Step 6: Final answer
    x = 79,132.25

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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.