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Finding the Fourth Proportional to 159,411.44, 219,985.13 and 87,798.13

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Solution

The fourth proportional to 159,411.44, 219,985.13 and 87,798.13 is: 121,159.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,411.44 : 219,985.13 = 87,798.13 : x
  2. Step 2: Convert to fraction form
    159,411.44/219,985.13 = 87,798.13/x
  3. Step 3: Cross multiply
    159,411.44x = 219,985.13 × 87,798.13
  4. Step 4: Simplify right side
    159,411.44x = 19,314,282,711.34
  5. Step 5: Solve for x
    x = 19,314,282,711.34/159,411.44
  6. Step 6: Final answer
    x = 121,159.95

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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.