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Finding the Fourth Proportional to 150,509.97, 207,710.13 and 90,068.93

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Solution

The fourth proportional to 150,509.97, 207,710.13 and 90,068.93 is: 124,298.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,509.97 : 207,710.13 = 90,068.93 : x
  2. Step 2: Convert to fraction form
    150,509.97/207,710.13 = 90,068.93/x
  3. Step 3: Cross multiply
    150,509.97x = 207,710.13 × 90,068.93
  4. Step 4: Simplify right side
    150,509.97x = 18,708,228,120.71
  5. Step 5: Solve for x
    x = 18,708,228,120.71/150,509.97
  6. Step 6: Final answer
    x = 124,298.93

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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.