Home / 158,346.90-218,516.47-90,385.40

Finding the Fourth Proportional to 158,346.90, 218,516.47 and 90,385.40

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Solution

The fourth proportional to 158,346.90, 218,516.47 and 90,385.40 is: 124,730.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,346.90 : 218,516.47 = 90,385.40 : x
  2. Step 2: Convert to fraction form
    158,346.90/218,516.47 = 90,385.40/x
  3. Step 3: Cross multiply
    158,346.90x = 218,516.47 × 90,385.40
  4. Step 4: Simplify right side
    158,346.90x = 19,750,698,867.87
  5. Step 5: Solve for x
    x = 19,750,698,867.87/158,346.90
  6. Step 6: Final answer
    x = 124,730.57

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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.