Home / 100,451.04-150,316.80-86,988.84

Finding the Fourth Proportional to 100,451.04, 150,316.80 and 86,988.84

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Solution

The fourth proportional to 100,451.04, 150,316.80 and 86,988.84 is: 130,171.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,451.04 : 150,316.80 = 86,988.84 : x
  2. Step 2: Convert to fraction form
    100,451.04/150,316.80 = 86,988.84/x
  3. Step 3: Cross multiply
    100,451.04x = 150,316.80 × 86,988.84
  4. Step 4: Simplify right side
    100,451.04x = 13,075,884,809.90
  5. Step 5: Solve for x
    x = 13,075,884,809.90/100,451.04
  6. Step 6: Final answer
    x = 130,171.72

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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.