Home / 91,256.04-136,888.92-28,931.40

Finding the Fourth Proportional to 91,256.04, 136,888.92 and 28,931.40

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Solution

The fourth proportional to 91,256.04, 136,888.92 and 28,931.40 is: 43,398.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,256.04 : 136,888.92 = 28,931.40 : x
  2. Step 2: Convert to fraction form
    91,256.04/136,888.92 = 28,931.40/x
  3. Step 3: Cross multiply
    91,256.04x = 136,888.92 × 28,931.40
  4. Step 4: Simplify right side
    91,256.04x = 3,960,388,100.09
  5. Step 5: Solve for x
    x = 3,960,388,100.09/91,256.04
  6. Step 6: Final answer
    x = 43,398.64

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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.