Home / 236,397.12-326,221.56-128,967.12

Finding the Fourth Proportional to 236,397.12, 326,221.56 and 128,967.12

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Solution

The fourth proportional to 236,397.12, 326,221.56 and 128,967.12 is: 177,971.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,397.12 : 326,221.56 = 128,967.12 : x
  2. Step 2: Convert to fraction form
    236,397.12/326,221.56 = 128,967.12/x
  3. Step 3: Cross multiply
    236,397.12x = 326,221.56 × 128,967.12
  4. Step 4: Simplify right side
    236,397.12x = 42,071,855,075.11
  5. Step 5: Solve for x
    x = 42,071,855,075.11/236,397.12
  6. Step 6: Final answer
    x = 177,971.10

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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.