Home / 109,785.58-151,488.08-64,478.16

Finding the Fourth Proportional to 109,785.58, 151,488.08 and 64,478.16

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Solution

The fourth proportional to 109,785.58, 151,488.08 and 64,478.16 is: 88,970.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,785.58 : 151,488.08 = 64,478.16 : x
  2. Step 2: Convert to fraction form
    109,785.58/151,488.08 = 64,478.16/x
  3. Step 3: Cross multiply
    109,785.58x = 151,488.08 × 64,478.16
  4. Step 4: Simplify right side
    109,785.58x = 9,767,672,914.82
  5. Step 5: Solve for x
    x = 9,767,672,914.82/109,785.58
  6. Step 6: Final answer
    x = 88,970.45

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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.