Home / 153,893.20-212,384.28-90,266.08

Finding the Fourth Proportional to 153,893.20, 212,384.28 and 90,266.08

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Solution

The fourth proportional to 153,893.20, 212,384.28 and 90,266.08 is: 124,574.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,893.20 : 212,384.28 = 90,266.08 : x
  2. Step 2: Convert to fraction form
    153,893.20/212,384.28 = 90,266.08/x
  3. Step 3: Cross multiply
    153,893.20x = 212,384.28 × 90,266.08
  4. Step 4: Simplify right side
    153,893.20x = 19,171,096,409.22
  5. Step 5: Solve for x
    x = 19,171,096,409.22/153,893.20
  6. Step 6: Final answer
    x = 124,574.03

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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.