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Finding the Fourth Proportional to 150,831.84, 208,124.76 and 87,157.32

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Solution

The fourth proportional to 150,831.84, 208,124.76 and 87,157.32 is: 120,263.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,831.84 : 208,124.76 = 87,157.32 : x
  2. Step 2: Convert to fraction form
    150,831.84/208,124.76 = 87,157.32/x
  3. Step 3: Cross multiply
    150,831.84x = 208,124.76 × 87,157.32
  4. Step 4: Simplify right side
    150,831.84x = 18,139,596,307.24
  5. Step 5: Solve for x
    x = 18,139,596,307.24/150,831.84
  6. Step 6: Final answer
    x = 120,263.71

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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.