Home / 212,534.40-318,802.28-86,176.84

Finding the Fourth Proportional to 212,534.40, 318,802.28 and 86,176.84

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Solution

The fourth proportional to 212,534.40, 318,802.28 and 86,176.84 is: 129,265.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,534.40 : 318,802.28 = 86,176.84 : x
  2. Step 2: Convert to fraction form
    212,534.40/318,802.28 = 86,176.84/x
  3. Step 3: Cross multiply
    212,534.40x = 318,802.28 × 86,176.84
  4. Step 4: Simplify right side
    212,534.40x = 27,473,373,075.20
  5. Step 5: Solve for x
    x = 27,473,373,075.20/212,534.40
  6. Step 6: Final answer
    x = 129,265.54

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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.