Home / 105,439.80-158,159.70-43,095.72

Finding the Fourth Proportional to 105,439.80, 158,159.70 and 43,095.72

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Solution

The fourth proportional to 105,439.80, 158,159.70 and 43,095.72 is: 64,643.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,439.80 : 158,159.70 = 43,095.72 : x
  2. Step 2: Convert to fraction form
    105,439.80/158,159.70 = 43,095.72/x
  3. Step 3: Cross multiply
    105,439.80x = 158,159.70 × 43,095.72
  4. Step 4: Simplify right side
    105,439.80x = 6,816,006,146.48
  5. Step 5: Solve for x
    x = 6,816,006,146.48/105,439.80
  6. Step 6: Final answer
    x = 64,643.58

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1.5x scale

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.