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Finding the Fourth Proportional to 105,504.74, 145,598.34 and 65,217.47

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Solution

The fourth proportional to 105,504.74, 145,598.34 and 65,217.47 is: 90,001.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,504.74 : 145,598.34 = 65,217.47 : x
  2. Step 2: Convert to fraction form
    105,504.74/145,598.34 = 65,217.47/x
  3. Step 3: Cross multiply
    105,504.74x = 145,598.34 × 65,217.47
  4. Step 4: Simplify right side
    105,504.74x = 9,495,554,887.57
  5. Step 5: Solve for x
    x = 9,495,554,887.57/105,504.74
  6. Step 6: Final answer
    x = 90,001.22

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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.