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Finding the Fourth Proportional to 103,547.33, 155,093.33 and 85,574.29

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Solution

The fourth proportional to 103,547.33, 155,093.33 and 85,574.29 is: 128,173.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,547.33 : 155,093.33 = 85,574.29 : x
  2. Step 2: Convert to fraction form
    103,547.33/155,093.33 = 85,574.29/x
  3. Step 3: Cross multiply
    103,547.33x = 155,093.33 × 85,574.29
  4. Step 4: Simplify right side
    103,547.33x = 13,272,001,598.49
  5. Step 5: Solve for x
    x = 13,272,001,598.49/103,547.33
  6. Step 6: Final answer
    x = 128,173.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.