Home / 112,651.16-155,458.64-64,904.09

Finding the Fourth Proportional to 112,651.16, 155,458.64 and 64,904.09

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Solution

The fourth proportional to 112,651.16, 155,458.64 and 64,904.09 is: 89,567.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,651.16 : 155,458.64 = 64,904.09 : x
  2. Step 2: Convert to fraction form
    112,651.16/155,458.64 = 64,904.09/x
  3. Step 3: Cross multiply
    112,651.16x = 155,458.64 × 64,904.09
  4. Step 4: Simplify right side
    112,651.16x = 10,089,900,946.80
  5. Step 5: Solve for x
    x = 10,089,900,946.80/112,651.16
  6. Step 6: Final answer
    x = 89,567.67

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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.