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Finding the Fourth Proportional to 103,673.52, 143,113.60 and 69,701.72

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Solution

The fourth proportional to 103,673.52, 143,113.60 and 69,701.72 is: 96,218.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,673.52 : 143,113.60 = 69,701.72 : x
  2. Step 2: Convert to fraction form
    103,673.52/143,113.60 = 69,701.72/x
  3. Step 3: Cross multiply
    103,673.52x = 143,113.60 × 69,701.72
  4. Step 4: Simplify right side
    103,673.52x = 9,975,264,075.39
  5. Step 5: Solve for x
    x = 9,975,264,075.39/103,673.52
  6. Step 6: Final answer
    x = 96,218.05

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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.