Home / 121,315.07-181,989.59-42,411.35

Finding the Fourth Proportional to 121,315.07, 181,989.59 and 42,411.35

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Solution

The fourth proportional to 121,315.07, 181,989.59 and 42,411.35 is: 63,622.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,315.07 : 181,989.59 = 42,411.35 : x
  2. Step 2: Convert to fraction form
    121,315.07/181,989.59 = 42,411.35/x
  3. Step 3: Cross multiply
    121,315.07x = 181,989.59 × 42,411.35
  4. Step 4: Simplify right side
    121,315.07x = 7,718,423,075.84
  5. Step 5: Solve for x
    x = 7,718,423,075.84/121,315.07
  6. Step 6: Final answer
    x = 63,622.96

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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.