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Finding the Fourth Proportional to 105,393, 145,447.66 and 62,397.18

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Solution

The fourth proportional to 105,393, 145,447.66 and 62,397.18 is: 86,111.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,393 : 145,447.66 = 62,397.18 : x
  2. Step 2: Convert to fraction form
    105,393/145,447.66 = 62,397.18/x
  3. Step 3: Cross multiply
    105,393x = 145,447.66 × 62,397.18
  4. Step 4: Simplify right side
    105,393x = 9,075,523,821.60
  5. Step 5: Solve for x
    x = 9,075,523,821.60/105,393
  6. Step 6: Final answer
    x = 86,111.26

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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.