Home / 112,666.80-155,494.08-64,280.64

Finding the Fourth Proportional to 112,666.80, 155,494.08 and 64,280.64

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Solution

The fourth proportional to 112,666.80, 155,494.08 and 64,280.64 is: 88,715.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,666.80 : 155,494.08 = 64,280.64 : x
  2. Step 2: Convert to fraction form
    112,666.80/155,494.08 = 64,280.64/x
  3. Step 3: Cross multiply
    112,666.80x = 155,494.08 × 64,280.64
  4. Step 4: Simplify right side
    112,666.80x = 9,995,258,978.61
  5. Step 5: Solve for x
    x = 9,995,258,978.61/112,666.80
  6. Step 6: Final answer
    x = 88,715.21

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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.