Home / 113,547.18-155,560.32-109,290.62

Finding the Fourth Proportional to 113,547.18, 155,560.32 and 109,290.62

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Solution

The fourth proportional to 113,547.18, 155,560.32 and 109,290.62 is: 149,728.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,547.18 : 155,560.32 = 109,290.62 : x
  2. Step 2: Convert to fraction form
    113,547.18/155,560.32 = 109,290.62/x
  3. Step 3: Cross multiply
    113,547.18x = 155,560.32 × 109,290.62
  4. Step 4: Simplify right side
    113,547.18x = 17,001,283,820.20
  5. Step 5: Solve for x
    x = 17,001,283,820.20/113,547.18
  6. Step 6: Final answer
    x = 149,728.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.