Home / 121,145.04-181,639.80-79,543.44

Finding the Fourth Proportional to 121,145.04, 181,639.80 and 79,543.44

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Solution

The fourth proportional to 121,145.04, 181,639.80 and 79,543.44 is: 119,264.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,145.04 : 181,639.80 = 79,543.44 : x
  2. Step 2: Convert to fraction form
    121,145.04/181,639.80 = 79,543.44/x
  3. Step 3: Cross multiply
    121,145.04x = 181,639.80 × 79,543.44
  4. Step 4: Simplify right side
    121,145.04x = 14,448,254,532.91
  5. Step 5: Solve for x
    x = 14,448,254,532.91/121,145.04
  6. Step 6: Final answer
    x = 119,264.10

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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.