Home / 157,972.95-218,017.58-86,363.55

Finding the Fourth Proportional to 157,972.95, 218,017.58 and 86,363.55

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Solution

The fourth proportional to 157,972.95, 218,017.58 and 86,363.55 is: 119,189.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,972.95 : 218,017.58 = 86,363.55 : x
  2. Step 2: Convert to fraction form
    157,972.95/218,017.58 = 86,363.55/x
  3. Step 3: Cross multiply
    157,972.95x = 218,017.58 × 86,363.55
  4. Step 4: Simplify right side
    157,972.95x = 18,828,771,739.39
  5. Step 5: Solve for x
    x = 18,828,771,739.39/157,972.95
  6. Step 6: Final answer
    x = 119,189.85

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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.