Home / 153,946.24-212,397.60-90,286.72

Finding the Fourth Proportional to 153,946.24, 212,397.60 and 90,286.72

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Solution

The fourth proportional to 153,946.24, 212,397.60 and 90,286.72 is: 124,567.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,946.24 : 212,397.60 = 90,286.72 : x
  2. Step 2: Convert to fraction form
    153,946.24/212,397.60 = 90,286.72/x
  3. Step 3: Cross multiply
    153,946.24x = 212,397.60 × 90,286.72
  4. Step 4: Simplify right side
    153,946.24x = 19,176,682,639.87
  5. Step 5: Solve for x
    x = 19,176,682,639.87/153,946.24
  6. Step 6: Final answer
    x = 124,567.40

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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.