Home / 103,531.80-155,297.70-98,720.40

Finding the Fourth Proportional to 103,531.80, 155,297.70 and 98,720.40

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Solution

The fourth proportional to 103,531.80, 155,297.70 and 98,720.40 is: 148,080.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,531.80 : 155,297.70 = 98,720.40 : x
  2. Step 2: Convert to fraction form
    103,531.80/155,297.70 = 98,720.40/x
  3. Step 3: Cross multiply
    103,531.80x = 155,297.70 × 98,720.40
  4. Step 4: Simplify right side
    103,531.80x = 15,331,051,063.08
  5. Step 5: Solve for x
    x = 15,331,051,063.08/103,531.80
  6. Step 6: Final answer
    x = 148,080.60

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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.