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Finding the Fourth Proportional to 163,990.32, 245,831.88 and 89,000.40

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Solution

The fourth proportional to 163,990.32, 245,831.88 and 89,000.40 is: 133,417.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,990.32 : 245,831.88 = 89,000.40 : x
  2. Step 2: Convert to fraction form
    163,990.32/245,831.88 = 89,000.40/x
  3. Step 3: Cross multiply
    163,990.32x = 245,831.88 × 89,000.40
  4. Step 4: Simplify right side
    163,990.32x = 21,879,135,652.75
  5. Step 5: Solve for x
    x = 21,879,135,652.75/163,990.32
  6. Step 6: Final answer
    x = 133,417.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.