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Finding the Fourth Proportional to 128,159.34, 176,859.33 and 70,798.69

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Solution

The fourth proportional to 128,159.34, 176,859.33 and 70,798.69 is: 97,701.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,159.34 : 176,859.33 = 70,798.69 : x
  2. Step 2: Convert to fraction form
    128,159.34/176,859.33 = 70,798.69/x
  3. Step 3: Cross multiply
    128,159.34x = 176,859.33 × 70,798.69
  4. Step 4: Simplify right side
    128,159.34x = 12,521,408,833.86
  5. Step 5: Solve for x
    x = 12,521,408,833.86/128,159.34
  6. Step 6: Final answer
    x = 97,701.88

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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.