Home / 98,712.15-136,222.34-53,390.19

Finding the Fourth Proportional to 98,712.15, 136,222.34 and 53,390.19

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Solution

The fourth proportional to 98,712.15, 136,222.34 and 53,390.19 is: 73,678.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,712.15 : 136,222.34 = 53,390.19 : x
  2. Step 2: Convert to fraction form
    98,712.15/136,222.34 = 53,390.19/x
  3. Step 3: Cross multiply
    98,712.15x = 136,222.34 × 53,390.19
  4. Step 4: Simplify right side
    98,712.15x = 7,272,936,347.89
  5. Step 5: Solve for x
    x = 7,272,936,347.89/98,712.15
  6. Step 6: Final answer
    x = 73,678.23

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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.