Home / 118,434.13-163,438.90-64,719.16

Finding the Fourth Proportional to 118,434.13, 163,438.90 and 64,719.16

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Solution

The fourth proportional to 118,434.13, 163,438.90 and 64,719.16 is: 89,312.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,434.13 : 163,438.90 = 64,719.16 : x
  2. Step 2: Convert to fraction form
    118,434.13/163,438.90 = 64,719.16/x
  3. Step 3: Cross multiply
    118,434.13x = 163,438.90 × 64,719.16
  4. Step 4: Simplify right side
    118,434.13x = 10,577,628,319.32
  5. Step 5: Solve for x
    x = 10,577,628,319.32/118,434.13
  6. Step 6: Final answer
    x = 89,312.33

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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.