Home / 86,931.08-130,440.36-64,788.92

Finding the Fourth Proportional to 86,931.08, 130,440.36 and 64,788.92

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Solution

The fourth proportional to 86,931.08, 130,440.36 and 64,788.92 is: 97,215.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,931.08 : 130,440.36 = 64,788.92 : x
  2. Step 2: Convert to fraction form
    86,931.08/130,440.36 = 64,788.92/x
  3. Step 3: Cross multiply
    86,931.08x = 130,440.36 × 64,788.92
  4. Step 4: Simplify right side
    86,931.08x = 8,451,090,048.81
  5. Step 5: Solve for x
    x = 8,451,090,048.81/86,931.08
  6. Step 6: Final answer
    x = 97,215.98

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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.