Home / 91,038.08-136,555.74-55,509.86

Finding the Fourth Proportional to 91,038.08, 136,555.74 and 55,509.86

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Solution

The fourth proportional to 91,038.08, 136,555.74 and 55,509.86 is: 83,263.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,038.08 : 136,555.74 = 55,509.86 : x
  2. Step 2: Convert to fraction form
    91,038.08/136,555.74 = 55,509.86/x
  3. Step 3: Cross multiply
    91,038.08x = 136,555.74 × 55,509.86
  4. Step 4: Simplify right side
    91,038.08x = 7,580,190,009.60
  5. Step 5: Solve for x
    x = 7,580,190,009.60/91,038.08
  6. Step 6: Final answer
    x = 83,263.95

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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.