Home / 90,597.12-124,980.48-70,418.40

Finding the Fourth Proportional to 90,597.12, 124,980.48 and 70,418.40

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Solution

The fourth proportional to 90,597.12, 124,980.48 and 70,418.40 is: 97,143.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,597.12 : 124,980.48 = 70,418.40 : x
  2. Step 2: Convert to fraction form
    90,597.12/124,980.48 = 70,418.40/x
  3. Step 3: Cross multiply
    90,597.12x = 124,980.48 × 70,418.40
  4. Step 4: Simplify right side
    90,597.12x = 8,800,925,432.83
  5. Step 5: Solve for x
    x = 8,800,925,432.83/90,597.12
  6. Step 6: Final answer
    x = 97,143.55

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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.