Home / 99,445.19-148,970.94-86,979.29

Finding the Fourth Proportional to 99,445.19, 148,970.94 and 86,979.29

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Solution

The fourth proportional to 99,445.19, 148,970.94 and 86,979.29 is: 130,296.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,445.19 : 148,970.94 = 86,979.29 : x
  2. Step 2: Convert to fraction form
    99,445.19/148,970.94 = 86,979.29/x
  3. Step 3: Cross multiply
    99,445.19x = 148,970.94 × 86,979.29
  4. Step 4: Simplify right side
    99,445.19x = 12,957,386,591.83
  5. Step 5: Solve for x
    x = 12,957,386,591.83/99,445.19
  6. Step 6: Final answer
    x = 130,296.77

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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.