Home / 112,730.32-155,547.84-64,985.68

Finding the Fourth Proportional to 112,730.32, 155,547.84 and 64,985.68

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Solution

The fourth proportional to 112,730.32, 155,547.84 and 64,985.68 is: 89,668.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,730.32 : 155,547.84 = 64,985.68 : x
  2. Step 2: Convert to fraction form
    112,730.32/155,547.84 = 64,985.68/x
  3. Step 3: Cross multiply
    112,730.32x = 155,547.84 × 64,985.68
  4. Step 4: Simplify right side
    112,730.32x = 10,108,382,154.93
  5. Step 5: Solve for x
    x = 10,108,382,154.93/112,730.32
  6. Step 6: Final answer
    x = 89,668.71

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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.