Home / 153,704.40-212,128.38-90,095.64

Finding the Fourth Proportional to 153,704.40, 212,128.38 and 90,095.64

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Solution

The fourth proportional to 153,704.40, 212,128.38 and 90,095.64 is: 124,341.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,704.40 : 212,128.38 = 90,095.64 : x
  2. Step 2: Convert to fraction form
    153,704.40/212,128.38 = 90,095.64/x
  3. Step 3: Cross multiply
    153,704.40x = 212,128.38 × 90,095.64
  4. Step 4: Simplify right side
    153,704.40x = 19,111,842,158.26
  5. Step 5: Solve for x
    x = 19,111,842,158.26/153,704.40
  6. Step 6: Final answer
    x = 124,341.54

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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.