Home / 152,372.80-210,272.16-85,307.20

Finding the Fourth Proportional to 152,372.80, 210,272.16 and 85,307.20

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Solution

The fourth proportional to 152,372.80, 210,272.16 and 85,307.20 is: 117,722.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,372.80 : 210,272.16 = 85,307.20 : x
  2. Step 2: Convert to fraction form
    152,372.80/210,272.16 = 85,307.20/x
  3. Step 3: Cross multiply
    152,372.80x = 210,272.16 × 85,307.20
  4. Step 4: Simplify right side
    152,372.80x = 17,937,729,207.55
  5. Step 5: Solve for x
    x = 17,937,729,207.55/152,372.80
  6. Step 6: Final answer
    x = 117,722.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.