Home / 90,803.40-125,312.76-75,670.74

Finding the Fourth Proportional to 90,803.40, 125,312.76 and 75,670.74

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Solution

The fourth proportional to 90,803.40, 125,312.76 and 75,670.74 is: 104,429.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,803.40 : 125,312.76 = 75,670.74 : x
  2. Step 2: Convert to fraction form
    90,803.40/125,312.76 = 75,670.74/x
  3. Step 3: Cross multiply
    90,803.40x = 125,312.76 × 75,670.74
  4. Step 4: Simplify right side
    90,803.40x = 9,482,509,280.64
  5. Step 5: Solve for x
    x = 9,482,509,280.64/90,803.40
  6. Step 6: Final answer
    x = 104,429.01

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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.