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Finding the Fourth Proportional to 153,063.95, 211,216.10 and 85,075.58

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Solution

The fourth proportional to 153,063.95, 211,216.10 and 85,075.58 is: 117,397.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,063.95 : 211,216.10 = 85,075.58 : x
  2. Step 2: Convert to fraction form
    153,063.95/211,216.10 = 85,075.58/x
  3. Step 3: Cross multiply
    153,063.95x = 211,216.10 × 85,075.58
  4. Step 4: Simplify right side
    153,063.95x = 17,969,332,315.50
  5. Step 5: Solve for x
    x = 17,969,332,315.50/153,063.95
  6. Step 6: Final answer
    x = 117,397.55

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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.