Home / 113,908.30-157,089.45-87,000.82

Finding the Fourth Proportional to 113,908.30, 157,089.45 and 87,000.82

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Solution

The fourth proportional to 113,908.30, 157,089.45 and 87,000.82 is: 119,981.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,908.30 : 157,089.45 = 87,000.82 : x
  2. Step 2: Convert to fraction form
    113,908.30/157,089.45 = 87,000.82/x
  3. Step 3: Cross multiply
    113,908.30x = 157,089.45 × 87,000.82
  4. Step 4: Simplify right side
    113,908.30x = 13,666,910,963.35
  5. Step 5: Solve for x
    x = 13,666,910,963.35/113,908.30
  6. Step 6: Final answer
    x = 119,981.70

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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.